diff --git a/parser/html/javasrc/AttributeName.java b/parser/html/javasrc/AttributeName.java
index 7cad3c2b034a..fa608ac60d56 100644
--- a/parser/html/javasrc/AttributeName.java
+++ b/parser/html/javasrc/AttributeName.java
@@ -977,6 +977,7 @@ public final class AttributeName
     public static final AttributeName ASYNC = new AttributeName(ALL_NO_NS, "async", "async", "async", "async", ALL_NO_PREFIX, NCNAME_HTML | NCNAME_FOREIGN | NCNAME_LANG | CASE_FOLDED | BOOLEAN);
     public static final AttributeName ALINK = new AttributeName(ALL_NO_NS, "alink", "alink", "alink", "alink", ALL_NO_PREFIX, NCNAME_HTML | NCNAME_FOREIGN | NCNAME_LANG);
     public static final AttributeName IN = new AttributeName(ALL_NO_NS, "in", "in", "in", "in", ALL_NO_PREFIX, NCNAME_HTML | NCNAME_FOREIGN | NCNAME_LANG);
+    public static final AttributeName EVENT = new AttributeName(ALL_NO_NS, "event", "event", "event", "event", ALL_NO_PREFIX, NCNAME_HTML | NCNAME_FOREIGN | NCNAME_LANG);
     public static final AttributeName ICON = new AttributeName(ALL_NO_NS, "icon", "icon", "icon", "icon", ALL_NO_PREFIX, NCNAME_HTML | NCNAME_FOREIGN | NCNAME_LANG);
     public static final AttributeName KERNELMATRIX = new AttributeName(ALL_NO_NS, "kernelmatrix", "kernelmatrix", "kernelMatrix", "kernelmatrix", ALL_NO_PREFIX, NCNAME_HTML | NCNAME_FOREIGN | NCNAME_LANG);
     public static final AttributeName KERNING = new AttributeName(ALL_NO_NS, "kerning", "kerning", "kerning", "kerning", ALL_NO_PREFIX, NCNAME_HTML | NCNAME_FOREIGN | NCNAME_LANG);
@@ -1197,19 +1198,19 @@ public final class AttributeName
     private final static @NoLength AttributeName[] ATTRIBUTE_NAMES = {
     AMPLITUDE,
     CODE,
-    ABBR,
+    WRAP,
     CLEAR,
     ALIGNMENT_BASELINE,
-    AUTOCAPITALIZE,
-    FONT_SIZE_ADJUST,
+    AUTOFOCUS,
+    FONT_VARIANT,
     ARIA_DISABLED,
     OPACITY,
     ORIENTATION,
     ACTIONTYPE,
-    ICON,
-    STROKE_DASHARRAY,
-    CLASS,
-    GROUPALIGN,
+    EVENT,
+    STROKE_LINECAP,
+    CLOSE,
+    COLUMNWIDTH,
     Y,
     ARIA_MULTISELECTABLE,
     ROTATE,
@@ -1219,13 +1220,13 @@ public final class AttributeName
     TARGET,
     SCRIPTSIZEMULTIPLIER,
     AZIMUTH,
-    TRANSFORM_ORIGIN,
-    ONMOUSEENTER,
-    GLYPH_ORIENTATION_HORIZONTAL,
-    OPERATOR,
-    ALTTEXT,
-    RESTART,
-    FX,
+    STANDBY,
+    ONMOUSEWHEEL,
+    GLYPH_ORIENTATION_VERTICAL,
+    ONERROR,
+    VERSION,
+    PATTERNCONTENTUNITS,
+    DX,
     MIN,
     K3,
     ARIA_CHANNEL,
@@ -1244,19 +1245,19 @@ public final class AttributeName
     MARKERHEIGHT,
     ONCLICK,
     PRIMITIVEUNITS,
-    ONINPUT,
-    XMLNS_XLINK,
-    EXPONENT,
-    ONMOUSEUP,
-    COMPACT,
-    SHAPE_RENDERING,
-    NOHREF,
-    BIAS,
-    PRESERVEALPHA,
-    FILTER,
-    RT,
-    WRITING_MODE,
-    VALUES,
+    ONEND,
+    XLINK_ARCROLE,
+    ENCODING,
+    ONMOUSEMOVE,
+    STROKE_OPACITY,
+    STEP,
+    NOWRAP,
+    AXIS,
+    OFFSET,
+    FONT_STRETCH,
+    MULTIPLE,
+    TEXT,
+    REQUIREDEXTENSIONS,
     DY,
     END,
     SRC,
@@ -1294,32 +1295,32 @@ public final class AttributeName
     SCALE,
     FRAMESPACING,
     ZOOMANDPAN,
-    ONUNLOAD,
-    POINTSATY,
-    XLINK_HREF,
-    XLINK_ACTUATE,
-    COLOR_INTERPOLATION,
-    NUMOCTAVES,
-    ONZOOM,
-    ONMOUSEDOWN,
-    STROKE,
-    CLIPPATHUNITS,
-    LOOP,
-    STOP_COLOR,
-    COORDS,
-    ONDRAGEND,
-    STARTOFFSET,
-    COLS,
-    LOWSRC,
-    ROWS,
-    CONTEXTMENU,
-    FONT_STYLE,
-    KEYTIMES,
-    PATTERNTRANSFORM,
-    TEXT_DECORATION,
-    COLUMNLINES,
-    REQUIRED,
-    VIEWTARGET,
+    KERNELUNITLENGTH,
+    POINTSATX,
+    WHEN,
+    XLINK_SHOW,
+    COLOR_RENDERING,
+    LQUOTE,
+    ONCONTEXTMENU,
+    ONFOCUSOUT,
+    STROKE_MITERLIMIT,
+    CLIP_PATH,
+    KEYPOINTS,
+    SLOPE,
+    CHAR,
+    ONDRAGOVER,
+    ONDRAGLEAVE,
+    CROSSORIGIN,
+    KEYSPLINES,
+    ROWSPACING,
+    CONTENT,
+    FONTSTYLE,
+    FONT_SIZE,
+    POSTER,
+    TEXT_RENDERING,
+    COLUMNSPAN,
+    ONCUT,
+    ELEVATION,
     BY,
     RY,
     DIR,
@@ -1394,59 +1395,59 @@ public final class AttributeName
     FORM,
     SUMMARY,
     ALINK,
-    KERNING,
-    ONINVALID,
-    POINTS,
-    SPAN,
-    VLINK,
-    XLINK_ROLE,
-    XLINK_TYPE,
-    AUTOCOMPLETE,
-    COLOR_PROFILE,
-    COLOR_INTERPOLATION_FILTERS,
-    FLOOD_OPACITY,
-    ONLOAD,
-    ONFOCUSIN,
-    ONMOUSELEAVE,
-    ONMOUSEOUT,
-    RQUOTE,
-    STROKE_LINEJOIN,
-    STROKE_WIDTH,
-    CLIP_RULE,
-    DISPLAYSTYLE,
-    HTTP_EQUIV,
-    SCOPED,
-    SHAPE,
-    TEMPLATE,
-    ATTRIBUTETYPE,
-    CHARSET,
-    ONDRAGENTER,
-    ONDRAGDROP,
-    ONDRAGSTART,
-    AS,
-    CLASSID,
-    CLOSURE,
-    KEYSYSTEM,
-    MINSIZE,
-    ROWSPAN,
-    SUBSCRIPTSHIFT,
-    CONTROLS,
-    ENCTYPE,
-    FONT_WEIGHT,
-    FONT_FAMILY,
-    FONTSIZE,
-    LIST,
-    ONSTART,
-    PATTERNUNITS,
-    SYSTEMLANGUAGE,
-    TEXTLENGTH,
-    ACCUMULATE,
-    COLUMNSPACING,
-    ONSUBMIT,
-    RESULT,
-    VALUE,
-    CX,
-    REFX,
+    KERNELMATRIX,
+    OPEN,
+    POINTER_EVENTS,
+    POINTSATZ,
+    TRANSFORM,
+    XLINK_TITLE,
+    XMLNS,
+    AUTOPLAY,
+    BGCOLOR,
+    COLOR,
+    FLOOD_COLOR,
+    NOMODULE,
+    ONMOUSEOVER,
+    ONCOPY,
+    ONFOCUS,
+    TO,
+    STROKE_DASHOFFSET,
+    SCROLLING,
+    CLIP,
+    DISPLAY,
+    GLYPHREF,
+    PROPERTY,
+    SCOPE,
+    STOP_OPACITY,
+    ATTRIBUTENAME,
+    CHAROFF,
+    ONDRAG,
+    ONDROP,
+    OVERFLOW,
+    START,
+    COLSPAN,
+    CURSOR,
+    IS,
+    MAXSIZE,
+    PRESERVEASPECTRATIO,
+    SRCSET,
+    CONTENTEDITABLE,
+    DEPTH,
+    FONTWEIGHT,
+    FONTFAMILY,
+    FILTERUNITS,
+    LETTER_SPACING,
+    ONSTOP,
+    PATTERN,
+    STITCHTILES,
+    TEXT_ANCHOR,
+    WIDTH,
+    COLUMNALIGN,
+    INPUTMODE,
+    REQUIREDFEATURES,
+    VALUETYPE,
+    VIEWBOX,
+    RX,
     CY,
     FY,
     REFY,
@@ -1594,128 +1595,129 @@ public final class AttributeName
     USEMAP,
     ASYNC,
     IN,
-    KERNELMATRIX,
-    KERNELUNITLENGTH,
-    OPEN,
-    ONEND,
-    POINTER_EVENTS,
-    POINTSATX,
-    POINTSATZ,
-    STANDBY,
-    TRANSFORM,
-    WHEN,
-    XLINK_TITLE,
-    XLINK_ARCROLE,
-    XMLNS,
-    XLINK_SHOW,
-    AUTOPLAY,
-    AUTOFOCUS,
-    BGCOLOR,
-    COLOR_RENDERING,
-    COLOR,
-    ENCODING,
-    FLOOD_COLOR,
-    LQUOTE,
-    NOMODULE,
-    ONMOUSEWHEEL,
-    ONMOUSEOVER,
-    ONCONTEXTMENU,
-    ONCOPY,
-    ONMOUSEMOVE,
-    ONFOCUS,
-    ONFOCUSOUT,
-    TO,
-    STROKE_LINECAP,
-    STROKE_DASHOFFSET,
-    STROKE_MITERLIMIT,
-    SCROLLING,
-    STROKE_OPACITY,
-    CLIP,
-    CLIP_PATH,
-    DISPLAY,
-    GLYPH_ORIENTATION_VERTICAL,
-    GLYPHREF,
-    KEYPOINTS,
-    PROPERTY,
-    STEP,
-    SCOPE,
-    SLOPE,
-    STOP_OPACITY,
-    WRAP,
-    ATTRIBUTENAME,
-    CHAR,
-    CHAROFF,
-    NOWRAP,
-    ONDRAG,
-    ONDRAGOVER,
-    ONDROP,
-    ONERROR,
-    OVERFLOW,
-    ONDRAGLEAVE,
-    START,
-    AXIS,
-    COLSPAN,
-    CROSSORIGIN,
-    CURSOR,
-    CLOSE,
-    IS,
-    KEYSPLINES,
-    MAXSIZE,
-    OFFSET,
-    PRESERVEASPECTRATIO,
-    ROWSPACING,
-    SRCSET,
-    VERSION,
-    CONTENTEDITABLE,
-    CONTENT,
-    DEPTH,
-    FONT_STRETCH,
-    FONTWEIGHT,
-    FONTSTYLE,
-    FONTFAMILY,
-    FONT_VARIANT,
-    FILTERUNITS,
-    FONT_SIZE,
-    LETTER_SPACING,
-    MULTIPLE,
-    ONSTOP,
-    POSTER,
-    PATTERN,
-    PATTERNCONTENTUNITS,
-    STITCHTILES,
-    TEXT_RENDERING,
-    TEXT_ANCHOR,
-    TEXT,
-    WIDTH,
-    COLUMNSPAN,
-    COLUMNALIGN,
-    COLUMNWIDTH,
-    INPUTMODE,
-    ONCUT,
-    REQUIREDFEATURES,
-    REQUIREDEXTENSIONS,
-    VALUETYPE,
-    ELEVATION,
-    VIEWBOX,
-    DX,
-    RX,
+    ICON,
+    KERNING,
+    ONUNLOAD,
+    ONINVALID,
+    ONINPUT,
+    POINTS,
+    POINTSATY,
+    SPAN,
+    TRANSFORM_ORIGIN,
+    VLINK,
+    XLINK_HREF,
+    XLINK_ROLE,
+    XMLNS_XLINK,
+    XLINK_TYPE,
+    XLINK_ACTUATE,
+    AUTOCOMPLETE,
+    AUTOCAPITALIZE,
+    COLOR_PROFILE,
+    COLOR_INTERPOLATION,
+    COLOR_INTERPOLATION_FILTERS,
+    EXPONENT,
+    FLOOD_OPACITY,
+    NUMOCTAVES,
+    ONLOAD,
+    ONMOUSEENTER,
+    ONFOCUSIN,
+    ONZOOM,
+    ONMOUSELEAVE,
+    ONMOUSEUP,
+    ONMOUSEOUT,
+    ONMOUSEDOWN,
+    RQUOTE,
+    STROKE_DASHARRAY,
+    STROKE_LINEJOIN,
+    STROKE,
+    STROKE_WIDTH,
+    COMPACT,
+    CLIP_RULE,
+    CLIPPATHUNITS,
+    DISPLAYSTYLE,
+    GLYPH_ORIENTATION_HORIZONTAL,
+    HTTP_EQUIV,
+    LOOP,
+    SCOPED,
+    SHAPE_RENDERING,
+    SHAPE,
+    STOP_COLOR,
+    TEMPLATE,
+    ABBR,
+    ATTRIBUTETYPE,
+    COORDS,
+    CHARSET,
+    NOHREF,
+    ONDRAGENTER,
+    ONDRAGEND,
+    ONDRAGDROP,
+    OPERATOR,
+    ONDRAGSTART,
+    STARTOFFSET,
+    AS,
+    BIAS,
+    CLASSID,
+    COLS,
+    CLOSURE,
+    CLASS,
+    KEYSYSTEM,
+    LOWSRC,
+    MINSIZE,
+    PRESERVEALPHA,
+    ROWSPAN,
+    ROWS,
+    SUBSCRIPTSHIFT,
+    ALTTEXT,
+    CONTROLS,
+    CONTEXTMENU,
+    ENCTYPE,
+    FILTER,
+    FONT_WEIGHT,
+    FONT_STYLE,
+    FONT_FAMILY,
+    FONT_SIZE_ADJUST,
+    FONTSIZE,
+    KEYTIMES,
+    LIST,
+    RT,
+    ONSTART,
+    PATTERNTRANSFORM,
+    PATTERNUNITS,
+    RESTART,
+    SYSTEMLANGUAGE,
+    TEXT_DECORATION,
+    TEXTLENGTH,
+    WRITING_MODE,
+    ACCUMULATE,
+    COLUMNLINES,
+    COLUMNSPACING,
+    GROUPALIGN,
+    ONSUBMIT,
+    REQUIRED,
+    RESULT,
+    VALUES,
+    VALUE,
+    VIEWTARGET,
+    CX,
+    FX,
+    REFX,
     };
     private final static int[] ATTRIBUTE_HASHES = {
     1864698185,
     1748306996,
-    1965349396,
+    1943317364,
     1681174213,
     1780975314,
-    1915394254,
-    2001814704,
+    1915341049,
+    2001732764,
     1680165421,
     1721347639,
     1754798923,
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-    1902640276,
-    1924462384,
-    1983461061,
-    2018908874,
+    1900548965,
+    1924443742,
+    1983432389,
+    2017010843,
     71827457,
     1680282148,
     1689324870,
@@ -1725,13 +1727,13 @@ public final class AttributeName
     1790814502,
     1823841492,
     1881750231,
-    1908316832,
-    1922413292,
-    1934917372,
-    1972909592,
-    1999273799,
-    2008084807,
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+    1907701479,
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+    1972908839,
+    1993343287,
+    2007064819,
+    2065694722,
     57205395,
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@@ -1750,19 +1752,19 @@ public final class AttributeName
     1854302364,
     1872034503,
     1889633006,
-    1905902311,
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+    2005342360,
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     53006051,
     60345635,
@@ -1800,32 +1802,32 @@ public final class AttributeName
     1874261045,
     1884267068,
     1894552650,
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@@ -1900,59 +1902,59 @@ public final class AttributeName
     1884343396,
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@@ -2100,110 +2102,111 @@ public final class AttributeName
     1891937366,
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+    1924585254,
+    1924738716,
+    1932870919,
+    1932986153,
+    1933145837,
+    1933508940,
+    1934917372,
+    1935597338,
+    1937777860,
+    1941253366,
+    1941409583,
+    1941438085,
+    1941454586,
+    1942026440,
+    1965349396,
+    1965561677,
+    1966439670,
+    1966454567,
+    1972196486,
+    1972744939,
+    1972863609,
+    1972904522,
+    1972909592,
+    1972962123,
+    1974849131,
+    1980235778,
+    1982640164,
+    1983266615,
+    1983347764,
+    1983416119,
+    1983461061,
+    1987410233,
+    1988132214,
+    1988788535,
+    1990062797,
+    1991021879,
+    1991392548,
+    1991643278,
+    1999273799,
+    2000125224,
+    2000162011,
+    2001210183,
+    2001578182,
+    2001634459,
+    2001669450,
+    2001710299,
+    2001814704,
+    2001898808,
+    2004199576,
+    2004957380,
+    2005925890,
+    2006516551,
+    2007019632,
+    2007064812,
+    2008084807,
+    2008408414,
+    2009071951,
+    2009141482,
+    2010452700,
+    2015950026,
+    2016787611,
+    2016910397,
+    2018908874,
+    2023146024,
+    2024616088,
+    2024763702,
+    2026741958,
+    2026975253,
+    2060302634,
+    2065170434,
+    2066743298,
+    2075005220,
     };
 }
diff --git a/parser/html/nsHtml5AttributeName.cpp b/parser/html/nsHtml5AttributeName.cpp
index e1881422cb62..0915a8cd6db6 100644
--- a/parser/html/nsHtml5AttributeName.cpp
+++ b/parser/html/nsHtml5AttributeName.cpp
@@ -374,6 +374,7 @@ nsHtml5AttributeName* nsHtml5AttributeName::ATTR_ZOOMANDPAN = nullptr;
 nsHtml5AttributeName* nsHtml5AttributeName::ATTR_ASYNC = nullptr;
 nsHtml5AttributeName* nsHtml5AttributeName::ATTR_ALINK = nullptr;
 nsHtml5AttributeName* nsHtml5AttributeName::ATTR_IN = nullptr;
+nsHtml5AttributeName* nsHtml5AttributeName::ATTR_EVENT = nullptr;
 nsHtml5AttributeName* nsHtml5AttributeName::ATTR_ICON = nullptr;
 nsHtml5AttributeName* nsHtml5AttributeName::ATTR_KERNELMATRIX = nullptr;
 nsHtml5AttributeName* nsHtml5AttributeName::ATTR_KERNING = nullptr;
@@ -596,27 +597,27 @@ nsHtml5AttributeName* nsHtml5AttributeName::ATTR_RY = nullptr;
 nsHtml5AttributeName* nsHtml5AttributeName::ATTR_REFY = nullptr;
 nsHtml5AttributeName** nsHtml5AttributeName::ATTRIBUTE_NAMES = 0;
 static int32_t const ATTRIBUTE_HASHES_DATA[] = {
-    1864698185, 1748306996, 1965349396, 1681174213, 1780975314, 1915394254,
-    2001814704, 1680165421, 1721347639, 1754798923, 1814558026, 1902640276,
-    1924462384, 1983461061, 2018908874, 71827457,   1680282148, 1689324870,
+    1864698185, 1748306996, 1943317364, 1681174213, 1780975314, 1915341049,
+    2001732764, 1680165421, 1721347639, 1754798923, 1814558026, 1900548965,
+    1924443742, 1983432389, 2017010843, 71827457,   1680282148, 1689324870,
     1740096054, 1753297133, 1756737685, 1790814502, 1823841492, 1881750231,
-    1908316832, 1922413292, 1934917372, 1972909592, 1999273799, 2008084807,
-    2066743298, 57205395,   911736834,  1680181996, 1680368221, 1685882101,
+    1907701479, 1922400908, 1934917290, 1972908839, 1993343287, 2007064819,
+    2065694722, 57205395,   911736834,  1680181996, 1680368221, 1685882101,
     1704526375, 1734182982, 1747446838, 1749399124, 1754643237, 1754958648,
     1765800271, 1786740932, 1804069019, 1820262641, 1854302364, 1872034503,
-    1889633006, 1905902311, 1910487243, 1917327080, 1922671417, 1932870919,
-    1941409583, 1972196486, 1982640164, 1990062797, 2001578182, 2005925890,
-    2010452700, 2026741958, 2082471938, 53006051,   60345635,   885522434,
+    1889633006, 1905754853, 1910441773, 1917295176, 1922665179, 1924773438,
+    1941286708, 1972151670, 1982254612, 1989522022, 2001527900, 2005342360,
+    2009231684, 2024794274, 2082471938, 53006051,   60345635,   885522434,
     1680095865, 1680165533, 1680229115, 1680343801, 1680437801, 1682440540,
     1687620127, 1692408896, 1716623661, 1731048742, 1739583824, 1742183484,
     1747839118, 1748869205, 1751679545, 1754546894, 1754647353, 1754872618,
     1756302628, 1756874572, 1772032615, 1785051290, 1787193500, 1801312388,
     1804978712, 1814986837, 1822002839, 1825677514, 1854474395, 1867448617,
-    1874261045, 1884267068, 1894552650, 1905541832, 1906421049, 1910328970,
-    1910572893, 1916278099, 1921894426, 1922567078, 1922699851, 1924585254,
-    1933145837, 1937777860, 1941454586, 1966439670, 1972863609, 1974849131,
-    1983347764, 1988132214, 1991392548, 2000162011, 2001669450, 2004199576,
-    2007019632, 2009071951, 2016787611, 2024616088, 2060302634, 2081423362,
+    1874261045, 1884267068, 1894552650, 1903759600, 1906419001, 1909819252,
+    1910527802, 1916247343, 1921061206, 1922566877, 1922679610, 1924583073,
+    1933123337, 1937336473, 1941440197, 1966384692, 1972744954, 1972996699,
+    1983290011, 1987422362, 1991220282, 2000160071, 2001669449, 2001898809,
+    2006824246, 2009041198, 2016711994, 2023342821, 2034765641, 2081423362,
     2089811970, 52488851,   55077603,   59825747,   68157441,   878182402,
     901775362,  1037879561, 1680159327, 1680165437, 1680165692, 1680198203,
     1680231247, 1680315086, 1680345965, 1680413393, 1680452349, 1681879063,
@@ -629,15 +630,15 @@ static int32_t const ATTRIBUTE_HASHES_DATA[] = {
     1804036350, 1804235064, 1805715716, 1814656326, 1816144023, 1820928104,
     1823580230, 1824377064, 1853862084, 1854464212, 1854497003, 1865910347,
     1867620412, 1873590471, 1874698443, 1884142379, 1884343396, 1891186903,
-    1898428101, 1903659239, 1905672729, 1906408598, 1907660596, 1909438149,
-    1910441770, 1910507338, 1915295948, 1916210285, 1916337499, 1917953597,
-    1922319046, 1922470745, 1922665052, 1922679386, 1924206934, 1924570799,
-    1924738716, 1932986153, 1933508940, 1935597338, 1941253366, 1941438085,
-    1942026440, 1965561677, 1966454567, 1972744939, 1972904522, 1972962123,
-    1980235778, 1983266615, 1983416119, 1987410233, 1988788535, 1991021879,
-    1991643278, 2000125224, 2001210183, 2001634459, 2001710299, 2001898808,
-    2004957380, 2006516551, 2007064812, 2008408414, 2009141482, 2015950026,
-    2016910397, 2023146024, 2024763702, 2026975253, 2065170434, 2075005220,
+    1898428101, 1903612236, 1905628916, 1906408542, 1906423097, 1908462185,
+    1910441627, 1910503637, 1915025672, 1915757815, 1916286197, 1917857531,
+    1921977416, 1922413307, 1922607670, 1922677495, 1923088386, 1924517489,
+    1924629705, 1932959284, 1933369607, 1934970504, 1939976792, 1941435445,
+    1941550652, 1965512429, 1966442279, 1972656710, 1972904518, 1972922984,
+    1975062341, 1983157559, 1983398182, 1984430082, 1988784439, 1990107683,
+    1991625270, 2000096287, 2000752725, 2001634458, 2001710298, 2001826027,
+    2004846654, 2006459190, 2007021895, 2008401563, 2009079867, 2010716309,
+    2016810187, 2019887833, 2024647008, 2026893641, 2060474743, 2073034754,
     2081947650, 2083520514, 2091784484, 50917059,   52489043,   53537523,
     56685811,   57210387,   59830867,   60817409,   71303169,   72351745,
     884998146,  894959618,  902299650,  928514050,  1038063816, 1680140893,
@@ -662,24 +663,25 @@ static int32_t const ATTRIBUTE_HASHES_DATA[] = {
     1854285018, 1854366938, 1854466380, 1854497001, 1854497008, 1865910331,
     1866496199, 1867462756, 1871251689, 1872343590, 1873656984, 1874270021,
     1874788501, 1884079398, 1884246821, 1884295780, 1889569526, 1890996553,
-    1891937366, 1898415413, 1900544002, 1903612236, 1903759600, 1905628916,
-    1905754853, 1906408542, 1906419001, 1906423097, 1907701479, 1908462185,
-    1909819252, 1910441627, 1910441773, 1910503637, 1910527802, 1915025672,
-    1915341049, 1915757815, 1916247343, 1916286197, 1917295176, 1917857531,
-    1921061206, 1921977416, 1922400908, 1922413307, 1922566877, 1922607670,
-    1922665179, 1922677495, 1922679610, 1923088386, 1924443742, 1924517489,
-    1924583073, 1924629705, 1924773438, 1932959284, 1933123337, 1933369607,
-    1934917290, 1934970504, 1937336473, 1939976792, 1941286708, 1941435445,
-    1941440197, 1941550652, 1943317364, 1965512429, 1966384692, 1966442279,
-    1972151670, 1972656710, 1972744954, 1972904518, 1972908839, 1972922984,
-    1972996699, 1975062341, 1982254612, 1983157559, 1983290011, 1983398182,
-    1983432389, 1984430082, 1987422362, 1988784439, 1989522022, 1990107683,
-    1991220282, 1991625270, 1993343287, 2000096287, 2000160071, 2000752725,
-    2001527900, 2001634458, 2001669449, 2001710298, 2001732764, 2001826027,
-    2001898809, 2004846654, 2005342360, 2006459190, 2006824246, 2007021895,
-    2007064819, 2008401563, 2009041198, 2009079867, 2009231684, 2010716309,
-    2016711994, 2016810187, 2017010843, 2019887833, 2023342821, 2024647008,
-    2024794274, 2026893641, 2034765641, 2060474743, 2065694722, 2073034754};
+    1891937366, 1898415413, 1900544002, 1902640276, 1903659239, 1905541832,
+    1905672729, 1905902311, 1906408598, 1906421049, 1907660596, 1908316832,
+    1909438149, 1910328970, 1910441770, 1910487243, 1910507338, 1910572893,
+    1915295948, 1915394254, 1916210285, 1916278099, 1916337499, 1917327080,
+    1917953597, 1921894426, 1922319046, 1922413292, 1922470745, 1922567078,
+    1922665052, 1922671417, 1922679386, 1922699851, 1924206934, 1924462384,
+    1924570799, 1924585254, 1924738716, 1932870919, 1932986153, 1933145837,
+    1933508940, 1934917372, 1935597338, 1937777860, 1941253366, 1941409583,
+    1941438085, 1941454586, 1942026440, 1965349396, 1965561677, 1966439670,
+    1966454567, 1972196486, 1972744939, 1972863609, 1972904522, 1972909592,
+    1972962123, 1974849131, 1980235778, 1982640164, 1983266615, 1983347764,
+    1983416119, 1983461061, 1987410233, 1988132214, 1988788535, 1990062797,
+    1991021879, 1991392548, 1991643278, 1999273799, 2000125224, 2000162011,
+    2001210183, 2001578182, 2001634459, 2001669450, 2001710299, 2001814704,
+    2001898808, 2004199576, 2004957380, 2005925890, 2006516551, 2007019632,
+    2007064812, 2008084807, 2008408414, 2009071951, 2009141482, 2010452700,
+    2015950026, 2016787611, 2016910397, 2018908874, 2023146024, 2024616088,
+    2024763702, 2026741958, 2026975253, 2060302634, 2065170434, 2066743298,
+    2075005220};
 staticJArray<int32_t, int32_t> nsHtml5AttributeName::ATTRIBUTE_HASHES = {
     ATTRIBUTE_HASHES_DATA, MOZ_ARRAY_LENGTH(ATTRIBUTE_HASHES_DATA)};
 void nsHtml5AttributeName::initializeStatics() {
@@ -1554,6 +1556,9 @@ void nsHtml5AttributeName::initializeStatics() {
                                nsGkAtoms::alink, ALL_NO_PREFIX);
   ATTR_IN = new nsHtml5AttributeName(ALL_NO_NS, nsGkAtoms::in, nsGkAtoms::in,
                                      nsGkAtoms::in, ALL_NO_PREFIX);
+  ATTR_EVENT =
+      new nsHtml5AttributeName(ALL_NO_NS, nsGkAtoms::event, nsGkAtoms::event,
+                               nsGkAtoms::event, ALL_NO_PREFIX);
   ATTR_ICON =
       new nsHtml5AttributeName(ALL_NO_NS, nsGkAtoms::icon, nsGkAtoms::icon,
                                nsGkAtoms::icon, ALL_NO_PREFIX);
@@ -2195,22 +2200,22 @@ void nsHtml5AttributeName::initializeStatics() {
   ATTR_REFY =
       new nsHtml5AttributeName(ALL_NO_NS, nsGkAtoms::refy, nsGkAtoms::refy,
                                nsGkAtoms::refY, ALL_NO_PREFIX);
-  ATTRIBUTE_NAMES = new nsHtml5AttributeName*[504];
+  ATTRIBUTE_NAMES = new nsHtml5AttributeName*[505];
   ATTRIBUTE_NAMES[0] = ATTR_AMPLITUDE;
   ATTRIBUTE_NAMES[1] = ATTR_CODE;
-  ATTRIBUTE_NAMES[2] = ATTR_ABBR;
+  ATTRIBUTE_NAMES[2] = ATTR_WRAP;
   ATTRIBUTE_NAMES[3] = ATTR_CLEAR;
   ATTRIBUTE_NAMES[4] = ATTR_ALIGNMENT_BASELINE;
-  ATTRIBUTE_NAMES[5] = ATTR_AUTOCAPITALIZE;
-  ATTRIBUTE_NAMES[6] = ATTR_FONT_SIZE_ADJUST;
+  ATTRIBUTE_NAMES[5] = ATTR_AUTOFOCUS;
+  ATTRIBUTE_NAMES[6] = ATTR_FONT_VARIANT;
   ATTRIBUTE_NAMES[7] = ATTR_ARIA_DISABLED;
   ATTRIBUTE_NAMES[8] = ATTR_OPACITY;
   ATTRIBUTE_NAMES[9] = ATTR_ORIENTATION;
   ATTRIBUTE_NAMES[10] = ATTR_ACTIONTYPE;
-  ATTRIBUTE_NAMES[11] = ATTR_ICON;
-  ATTRIBUTE_NAMES[12] = ATTR_STROKE_DASHARRAY;
-  ATTRIBUTE_NAMES[13] = ATTR_CLASS;
-  ATTRIBUTE_NAMES[14] = ATTR_GROUPALIGN;
+  ATTRIBUTE_NAMES[11] = ATTR_EVENT;
+  ATTRIBUTE_NAMES[12] = ATTR_STROKE_LINECAP;
+  ATTRIBUTE_NAMES[13] = ATTR_CLOSE;
+  ATTRIBUTE_NAMES[14] = ATTR_COLUMNWIDTH;
   ATTRIBUTE_NAMES[15] = ATTR_Y;
   ATTRIBUTE_NAMES[16] = ATTR_ARIA_MULTISELECTABLE;
   ATTRIBUTE_NAMES[17] = ATTR_ROTATE;
@@ -2220,13 +2225,13 @@ void nsHtml5AttributeName::initializeStatics() {
   ATTRIBUTE_NAMES[21] = ATTR_TARGET;
   ATTRIBUTE_NAMES[22] = ATTR_SCRIPTSIZEMULTIPLIER;
   ATTRIBUTE_NAMES[23] = ATTR_AZIMUTH;
-  ATTRIBUTE_NAMES[24] = ATTR_TRANSFORM_ORIGIN;
-  ATTRIBUTE_NAMES[25] = ATTR_ONMOUSEENTER;
-  ATTRIBUTE_NAMES[26] = ATTR_GLYPH_ORIENTATION_HORIZONTAL;
-  ATTRIBUTE_NAMES[27] = ATTR_OPERATOR;
-  ATTRIBUTE_NAMES[28] = ATTR_ALTTEXT;
-  ATTRIBUTE_NAMES[29] = ATTR_RESTART;
-  ATTRIBUTE_NAMES[30] = ATTR_FX;
+  ATTRIBUTE_NAMES[24] = ATTR_STANDBY;
+  ATTRIBUTE_NAMES[25] = ATTR_ONMOUSEWHEEL;
+  ATTRIBUTE_NAMES[26] = ATTR_GLYPH_ORIENTATION_VERTICAL;
+  ATTRIBUTE_NAMES[27] = ATTR_ONERROR;
+  ATTRIBUTE_NAMES[28] = ATTR_VERSION;
+  ATTRIBUTE_NAMES[29] = ATTR_PATTERNCONTENTUNITS;
+  ATTRIBUTE_NAMES[30] = ATTR_DX;
   ATTRIBUTE_NAMES[31] = ATTR_MIN;
   ATTRIBUTE_NAMES[32] = ATTR_K3;
   ATTRIBUTE_NAMES[33] = ATTR_ARIA_CHANNEL;
@@ -2245,19 +2250,19 @@ void nsHtml5AttributeName::initializeStatics() {
   ATTRIBUTE_NAMES[46] = ATTR_MARKERHEIGHT;
   ATTRIBUTE_NAMES[47] = ATTR_ONCLICK;
   ATTRIBUTE_NAMES[48] = ATTR_PRIMITIVEUNITS;
-  ATTRIBUTE_NAMES[49] = ATTR_ONINPUT;
-  ATTRIBUTE_NAMES[50] = ATTR_XMLNS_XLINK;
-  ATTRIBUTE_NAMES[51] = ATTR_EXPONENT;
-  ATTRIBUTE_NAMES[52] = ATTR_ONMOUSEUP;
-  ATTRIBUTE_NAMES[53] = ATTR_COMPACT;
-  ATTRIBUTE_NAMES[54] = ATTR_SHAPE_RENDERING;
-  ATTRIBUTE_NAMES[55] = ATTR_NOHREF;
-  ATTRIBUTE_NAMES[56] = ATTR_BIAS;
-  ATTRIBUTE_NAMES[57] = ATTR_PRESERVEALPHA;
-  ATTRIBUTE_NAMES[58] = ATTR_FILTER;
-  ATTRIBUTE_NAMES[59] = ATTR_RT;
-  ATTRIBUTE_NAMES[60] = ATTR_WRITING_MODE;
-  ATTRIBUTE_NAMES[61] = ATTR_VALUES;
+  ATTRIBUTE_NAMES[49] = ATTR_ONEND;
+  ATTRIBUTE_NAMES[50] = ATTR_XLINK_ARCROLE;
+  ATTRIBUTE_NAMES[51] = ATTR_ENCODING;
+  ATTRIBUTE_NAMES[52] = ATTR_ONMOUSEMOVE;
+  ATTRIBUTE_NAMES[53] = ATTR_STROKE_OPACITY;
+  ATTRIBUTE_NAMES[54] = ATTR_STEP;
+  ATTRIBUTE_NAMES[55] = ATTR_NOWRAP;
+  ATTRIBUTE_NAMES[56] = ATTR_AXIS;
+  ATTRIBUTE_NAMES[57] = ATTR_OFFSET;
+  ATTRIBUTE_NAMES[58] = ATTR_FONT_STRETCH;
+  ATTRIBUTE_NAMES[59] = ATTR_MULTIPLE;
+  ATTRIBUTE_NAMES[60] = ATTR_TEXT;
+  ATTRIBUTE_NAMES[61] = ATTR_REQUIREDEXTENSIONS;
   ATTRIBUTE_NAMES[62] = ATTR_DY;
   ATTRIBUTE_NAMES[63] = ATTR_END;
   ATTRIBUTE_NAMES[64] = ATTR_SRC;
@@ -2295,32 +2300,32 @@ void nsHtml5AttributeName::initializeStatics() {
   ATTRIBUTE_NAMES[96] = ATTR_SCALE;
   ATTRIBUTE_NAMES[97] = ATTR_FRAMESPACING;
   ATTRIBUTE_NAMES[98] = ATTR_ZOOMANDPAN;
-  ATTRIBUTE_NAMES[99] = ATTR_ONUNLOAD;
-  ATTRIBUTE_NAMES[100] = ATTR_POINTSATY;
-  ATTRIBUTE_NAMES[101] = ATTR_XLINK_HREF;
-  ATTRIBUTE_NAMES[102] = ATTR_XLINK_ACTUATE;
-  ATTRIBUTE_NAMES[103] = ATTR_COLOR_INTERPOLATION;
-  ATTRIBUTE_NAMES[104] = ATTR_NUMOCTAVES;
-  ATTRIBUTE_NAMES[105] = ATTR_ONZOOM;
-  ATTRIBUTE_NAMES[106] = ATTR_ONMOUSEDOWN;
-  ATTRIBUTE_NAMES[107] = ATTR_STROKE;
-  ATTRIBUTE_NAMES[108] = ATTR_CLIPPATHUNITS;
-  ATTRIBUTE_NAMES[109] = ATTR_LOOP;
-  ATTRIBUTE_NAMES[110] = ATTR_STOP_COLOR;
-  ATTRIBUTE_NAMES[111] = ATTR_COORDS;
-  ATTRIBUTE_NAMES[112] = ATTR_ONDRAGEND;
-  ATTRIBUTE_NAMES[113] = ATTR_STARTOFFSET;
-  ATTRIBUTE_NAMES[114] = ATTR_COLS;
-  ATTRIBUTE_NAMES[115] = ATTR_LOWSRC;
-  ATTRIBUTE_NAMES[116] = ATTR_ROWS;
-  ATTRIBUTE_NAMES[117] = ATTR_CONTEXTMENU;
-  ATTRIBUTE_NAMES[118] = ATTR_FONT_STYLE;
-  ATTRIBUTE_NAMES[119] = ATTR_KEYTIMES;
-  ATTRIBUTE_NAMES[120] = ATTR_PATTERNTRANSFORM;
-  ATTRIBUTE_NAMES[121] = ATTR_TEXT_DECORATION;
-  ATTRIBUTE_NAMES[122] = ATTR_COLUMNLINES;
-  ATTRIBUTE_NAMES[123] = ATTR_REQUIRED;
-  ATTRIBUTE_NAMES[124] = ATTR_VIEWTARGET;
+  ATTRIBUTE_NAMES[99] = ATTR_KERNELUNITLENGTH;
+  ATTRIBUTE_NAMES[100] = ATTR_POINTSATX;
+  ATTRIBUTE_NAMES[101] = ATTR_WHEN;
+  ATTRIBUTE_NAMES[102] = ATTR_XLINK_SHOW;
+  ATTRIBUTE_NAMES[103] = ATTR_COLOR_RENDERING;
+  ATTRIBUTE_NAMES[104] = ATTR_LQUOTE;
+  ATTRIBUTE_NAMES[105] = ATTR_ONCONTEXTMENU;
+  ATTRIBUTE_NAMES[106] = ATTR_ONFOCUSOUT;
+  ATTRIBUTE_NAMES[107] = ATTR_STROKE_MITERLIMIT;
+  ATTRIBUTE_NAMES[108] = ATTR_CLIP_PATH;
+  ATTRIBUTE_NAMES[109] = ATTR_KEYPOINTS;
+  ATTRIBUTE_NAMES[110] = ATTR_SLOPE;
+  ATTRIBUTE_NAMES[111] = ATTR_CHAR;
+  ATTRIBUTE_NAMES[112] = ATTR_ONDRAGOVER;
+  ATTRIBUTE_NAMES[113] = ATTR_ONDRAGLEAVE;
+  ATTRIBUTE_NAMES[114] = ATTR_CROSSORIGIN;
+  ATTRIBUTE_NAMES[115] = ATTR_KEYSPLINES;
+  ATTRIBUTE_NAMES[116] = ATTR_ROWSPACING;
+  ATTRIBUTE_NAMES[117] = ATTR_CONTENT;
+  ATTRIBUTE_NAMES[118] = ATTR_FONTSTYLE;
+  ATTRIBUTE_NAMES[119] = ATTR_FONT_SIZE;
+  ATTRIBUTE_NAMES[120] = ATTR_POSTER;
+  ATTRIBUTE_NAMES[121] = ATTR_TEXT_RENDERING;
+  ATTRIBUTE_NAMES[122] = ATTR_COLUMNSPAN;
+  ATTRIBUTE_NAMES[123] = ATTR_ONCUT;
+  ATTRIBUTE_NAMES[124] = ATTR_ELEVATION;
   ATTRIBUTE_NAMES[125] = ATTR_BY;
   ATTRIBUTE_NAMES[126] = ATTR_RY;
   ATTRIBUTE_NAMES[127] = ATTR_DIR;
@@ -2395,59 +2400,59 @@ void nsHtml5AttributeName::initializeStatics() {
   ATTRIBUTE_NAMES[196] = ATTR_FORM;
   ATTRIBUTE_NAMES[197] = ATTR_SUMMARY;
   ATTRIBUTE_NAMES[198] = ATTR_ALINK;
-  ATTRIBUTE_NAMES[199] = ATTR_KERNING;
-  ATTRIBUTE_NAMES[200] = ATTR_ONINVALID;
-  ATTRIBUTE_NAMES[201] = ATTR_POINTS;
-  ATTRIBUTE_NAMES[202] = ATTR_SPAN;
-  ATTRIBUTE_NAMES[203] = ATTR_VLINK;
-  ATTRIBUTE_NAMES[204] = ATTR_XLINK_ROLE;
-  ATTRIBUTE_NAMES[205] = ATTR_XLINK_TYPE;
-  ATTRIBUTE_NAMES[206] = ATTR_AUTOCOMPLETE;
-  ATTRIBUTE_NAMES[207] = ATTR_COLOR_PROFILE;
-  ATTRIBUTE_NAMES[208] = ATTR_COLOR_INTERPOLATION_FILTERS;
-  ATTRIBUTE_NAMES[209] = ATTR_FLOOD_OPACITY;
-  ATTRIBUTE_NAMES[210] = ATTR_ONLOAD;
-  ATTRIBUTE_NAMES[211] = ATTR_ONFOCUSIN;
-  ATTRIBUTE_NAMES[212] = ATTR_ONMOUSELEAVE;
-  ATTRIBUTE_NAMES[213] = ATTR_ONMOUSEOUT;
-  ATTRIBUTE_NAMES[214] = ATTR_RQUOTE;
-  ATTRIBUTE_NAMES[215] = ATTR_STROKE_LINEJOIN;
-  ATTRIBUTE_NAMES[216] = ATTR_STROKE_WIDTH;
-  ATTRIBUTE_NAMES[217] = ATTR_CLIP_RULE;
-  ATTRIBUTE_NAMES[218] = ATTR_DISPLAYSTYLE;
-  ATTRIBUTE_NAMES[219] = ATTR_HTTP_EQUIV;
-  ATTRIBUTE_NAMES[220] = ATTR_SCOPED;
-  ATTRIBUTE_NAMES[221] = ATTR_SHAPE;
-  ATTRIBUTE_NAMES[222] = ATTR_TEMPLATE;
-  ATTRIBUTE_NAMES[223] = ATTR_ATTRIBUTETYPE;
-  ATTRIBUTE_NAMES[224] = ATTR_CHARSET;
-  ATTRIBUTE_NAMES[225] = ATTR_ONDRAGENTER;
-  ATTRIBUTE_NAMES[226] = ATTR_ONDRAGDROP;
-  ATTRIBUTE_NAMES[227] = ATTR_ONDRAGSTART;
-  ATTRIBUTE_NAMES[228] = ATTR_AS;
-  ATTRIBUTE_NAMES[229] = ATTR_CLASSID;
-  ATTRIBUTE_NAMES[230] = ATTR_CLOSURE;
-  ATTRIBUTE_NAMES[231] = ATTR_KEYSYSTEM;
-  ATTRIBUTE_NAMES[232] = ATTR_MINSIZE;
-  ATTRIBUTE_NAMES[233] = ATTR_ROWSPAN;
-  ATTRIBUTE_NAMES[234] = ATTR_SUBSCRIPTSHIFT;
-  ATTRIBUTE_NAMES[235] = ATTR_CONTROLS;
-  ATTRIBUTE_NAMES[236] = ATTR_ENCTYPE;
-  ATTRIBUTE_NAMES[237] = ATTR_FONT_WEIGHT;
-  ATTRIBUTE_NAMES[238] = ATTR_FONT_FAMILY;
-  ATTRIBUTE_NAMES[239] = ATTR_FONTSIZE;
-  ATTRIBUTE_NAMES[240] = ATTR_LIST;
-  ATTRIBUTE_NAMES[241] = ATTR_ONSTART;
-  ATTRIBUTE_NAMES[242] = ATTR_PATTERNUNITS;
-  ATTRIBUTE_NAMES[243] = ATTR_SYSTEMLANGUAGE;
-  ATTRIBUTE_NAMES[244] = ATTR_TEXTLENGTH;
-  ATTRIBUTE_NAMES[245] = ATTR_ACCUMULATE;
-  ATTRIBUTE_NAMES[246] = ATTR_COLUMNSPACING;
-  ATTRIBUTE_NAMES[247] = ATTR_ONSUBMIT;
-  ATTRIBUTE_NAMES[248] = ATTR_RESULT;
-  ATTRIBUTE_NAMES[249] = ATTR_VALUE;
-  ATTRIBUTE_NAMES[250] = ATTR_CX;
-  ATTRIBUTE_NAMES[251] = ATTR_REFX;
+  ATTRIBUTE_NAMES[199] = ATTR_KERNELMATRIX;
+  ATTRIBUTE_NAMES[200] = ATTR_OPEN;
+  ATTRIBUTE_NAMES[201] = ATTR_POINTER_EVENTS;
+  ATTRIBUTE_NAMES[202] = ATTR_POINTSATZ;
+  ATTRIBUTE_NAMES[203] = ATTR_TRANSFORM;
+  ATTRIBUTE_NAMES[204] = ATTR_XLINK_TITLE;
+  ATTRIBUTE_NAMES[205] = ATTR_XMLNS;
+  ATTRIBUTE_NAMES[206] = ATTR_AUTOPLAY;
+  ATTRIBUTE_NAMES[207] = ATTR_BGCOLOR;
+  ATTRIBUTE_NAMES[208] = ATTR_COLOR;
+  ATTRIBUTE_NAMES[209] = ATTR_FLOOD_COLOR;
+  ATTRIBUTE_NAMES[210] = ATTR_NOMODULE;
+  ATTRIBUTE_NAMES[211] = ATTR_ONMOUSEOVER;
+  ATTRIBUTE_NAMES[212] = ATTR_ONCOPY;
+  ATTRIBUTE_NAMES[213] = ATTR_ONFOCUS;
+  ATTRIBUTE_NAMES[214] = ATTR_TO;
+  ATTRIBUTE_NAMES[215] = ATTR_STROKE_DASHOFFSET;
+  ATTRIBUTE_NAMES[216] = ATTR_SCROLLING;
+  ATTRIBUTE_NAMES[217] = ATTR_CLIP;
+  ATTRIBUTE_NAMES[218] = ATTR_DISPLAY;
+  ATTRIBUTE_NAMES[219] = ATTR_GLYPHREF;
+  ATTRIBUTE_NAMES[220] = ATTR_PROPERTY;
+  ATTRIBUTE_NAMES[221] = ATTR_SCOPE;
+  ATTRIBUTE_NAMES[222] = ATTR_STOP_OPACITY;
+  ATTRIBUTE_NAMES[223] = ATTR_ATTRIBUTENAME;
+  ATTRIBUTE_NAMES[224] = ATTR_CHAROFF;
+  ATTRIBUTE_NAMES[225] = ATTR_ONDRAG;
+  ATTRIBUTE_NAMES[226] = ATTR_ONDROP;
+  ATTRIBUTE_NAMES[227] = ATTR_OVERFLOW;
+  ATTRIBUTE_NAMES[228] = ATTR_START;
+  ATTRIBUTE_NAMES[229] = ATTR_COLSPAN;
+  ATTRIBUTE_NAMES[230] = ATTR_CURSOR;
+  ATTRIBUTE_NAMES[231] = ATTR_IS;
+  ATTRIBUTE_NAMES[232] = ATTR_MAXSIZE;
+  ATTRIBUTE_NAMES[233] = ATTR_PRESERVEASPECTRATIO;
+  ATTRIBUTE_NAMES[234] = ATTR_SRCSET;
+  ATTRIBUTE_NAMES[235] = ATTR_CONTENTEDITABLE;
+  ATTRIBUTE_NAMES[236] = ATTR_DEPTH;
+  ATTRIBUTE_NAMES[237] = ATTR_FONTWEIGHT;
+  ATTRIBUTE_NAMES[238] = ATTR_FONTFAMILY;
+  ATTRIBUTE_NAMES[239] = ATTR_FILTERUNITS;
+  ATTRIBUTE_NAMES[240] = ATTR_LETTER_SPACING;
+  ATTRIBUTE_NAMES[241] = ATTR_ONSTOP;
+  ATTRIBUTE_NAMES[242] = ATTR_PATTERN;
+  ATTRIBUTE_NAMES[243] = ATTR_STITCHTILES;
+  ATTRIBUTE_NAMES[244] = ATTR_TEXT_ANCHOR;
+  ATTRIBUTE_NAMES[245] = ATTR_WIDTH;
+  ATTRIBUTE_NAMES[246] = ATTR_COLUMNALIGN;
+  ATTRIBUTE_NAMES[247] = ATTR_INPUTMODE;
+  ATTRIBUTE_NAMES[248] = ATTR_REQUIREDFEATURES;
+  ATTRIBUTE_NAMES[249] = ATTR_VALUETYPE;
+  ATTRIBUTE_NAMES[250] = ATTR_VIEWBOX;
+  ATTRIBUTE_NAMES[251] = ATTR_RX;
   ATTRIBUTE_NAMES[252] = ATTR_CY;
   ATTRIBUTE_NAMES[253] = ATTR_FY;
   ATTRIBUTE_NAMES[254] = ATTR_REFY;
@@ -2595,111 +2600,112 @@ void nsHtml5AttributeName::initializeStatics() {
   ATTRIBUTE_NAMES[396] = ATTR_USEMAP;
   ATTRIBUTE_NAMES[397] = ATTR_ASYNC;
   ATTRIBUTE_NAMES[398] = ATTR_IN;
-  ATTRIBUTE_NAMES[399] = ATTR_KERNELMATRIX;
-  ATTRIBUTE_NAMES[400] = ATTR_KERNELUNITLENGTH;
-  ATTRIBUTE_NAMES[401] = ATTR_OPEN;
-  ATTRIBUTE_NAMES[402] = ATTR_ONEND;
-  ATTRIBUTE_NAMES[403] = ATTR_POINTER_EVENTS;
-  ATTRIBUTE_NAMES[404] = ATTR_POINTSATX;
-  ATTRIBUTE_NAMES[405] = ATTR_POINTSATZ;
-  ATTRIBUTE_NAMES[406] = ATTR_STANDBY;
-  ATTRIBUTE_NAMES[407] = ATTR_TRANSFORM;
-  ATTRIBUTE_NAMES[408] = ATTR_WHEN;
-  ATTRIBUTE_NAMES[409] = ATTR_XLINK_TITLE;
-  ATTRIBUTE_NAMES[410] = ATTR_XLINK_ARCROLE;
-  ATTRIBUTE_NAMES[411] = ATTR_XMLNS;
-  ATTRIBUTE_NAMES[412] = ATTR_XLINK_SHOW;
-  ATTRIBUTE_NAMES[413] = ATTR_AUTOPLAY;
-  ATTRIBUTE_NAMES[414] = ATTR_AUTOFOCUS;
-  ATTRIBUTE_NAMES[415] = ATTR_BGCOLOR;
-  ATTRIBUTE_NAMES[416] = ATTR_COLOR_RENDERING;
-  ATTRIBUTE_NAMES[417] = ATTR_COLOR;
-  ATTRIBUTE_NAMES[418] = ATTR_ENCODING;
-  ATTRIBUTE_NAMES[419] = ATTR_FLOOD_COLOR;
-  ATTRIBUTE_NAMES[420] = ATTR_LQUOTE;
-  ATTRIBUTE_NAMES[421] = ATTR_NOMODULE;
-  ATTRIBUTE_NAMES[422] = ATTR_ONMOUSEWHEEL;
-  ATTRIBUTE_NAMES[423] = ATTR_ONMOUSEOVER;
-  ATTRIBUTE_NAMES[424] = ATTR_ONCONTEXTMENU;
-  ATTRIBUTE_NAMES[425] = ATTR_ONCOPY;
-  ATTRIBUTE_NAMES[426] = ATTR_ONMOUSEMOVE;
-  ATTRIBUTE_NAMES[427] = ATTR_ONFOCUS;
-  ATTRIBUTE_NAMES[428] = ATTR_ONFOCUSOUT;
-  ATTRIBUTE_NAMES[429] = ATTR_TO;
-  ATTRIBUTE_NAMES[430] = ATTR_STROKE_LINECAP;
-  ATTRIBUTE_NAMES[431] = ATTR_STROKE_DASHOFFSET;
-  ATTRIBUTE_NAMES[432] = ATTR_STROKE_MITERLIMIT;
-  ATTRIBUTE_NAMES[433] = ATTR_SCROLLING;
-  ATTRIBUTE_NAMES[434] = ATTR_STROKE_OPACITY;
-  ATTRIBUTE_NAMES[435] = ATTR_CLIP;
-  ATTRIBUTE_NAMES[436] = ATTR_CLIP_PATH;
-  ATTRIBUTE_NAMES[437] = ATTR_DISPLAY;
-  ATTRIBUTE_NAMES[438] = ATTR_GLYPH_ORIENTATION_VERTICAL;
-  ATTRIBUTE_NAMES[439] = ATTR_GLYPHREF;
-  ATTRIBUTE_NAMES[440] = ATTR_KEYPOINTS;
-  ATTRIBUTE_NAMES[441] = ATTR_PROPERTY;
-  ATTRIBUTE_NAMES[442] = ATTR_STEP;
-  ATTRIBUTE_NAMES[443] = ATTR_SCOPE;
-  ATTRIBUTE_NAMES[444] = ATTR_SLOPE;
-  ATTRIBUTE_NAMES[445] = ATTR_STOP_OPACITY;
-  ATTRIBUTE_NAMES[446] = ATTR_WRAP;
-  ATTRIBUTE_NAMES[447] = ATTR_ATTRIBUTENAME;
-  ATTRIBUTE_NAMES[448] = ATTR_CHAR;
-  ATTRIBUTE_NAMES[449] = ATTR_CHAROFF;
-  ATTRIBUTE_NAMES[450] = ATTR_NOWRAP;
-  ATTRIBUTE_NAMES[451] = ATTR_ONDRAG;
-  ATTRIBUTE_NAMES[452] = ATTR_ONDRAGOVER;
-  ATTRIBUTE_NAMES[453] = ATTR_ONDROP;
-  ATTRIBUTE_NAMES[454] = ATTR_ONERROR;
-  ATTRIBUTE_NAMES[455] = ATTR_OVERFLOW;
-  ATTRIBUTE_NAMES[456] = ATTR_ONDRAGLEAVE;
-  ATTRIBUTE_NAMES[457] = ATTR_START;
-  ATTRIBUTE_NAMES[458] = ATTR_AXIS;
-  ATTRIBUTE_NAMES[459] = ATTR_COLSPAN;
-  ATTRIBUTE_NAMES[460] = ATTR_CROSSORIGIN;
-  ATTRIBUTE_NAMES[461] = ATTR_CURSOR;
-  ATTRIBUTE_NAMES[462] = ATTR_CLOSE;
-  ATTRIBUTE_NAMES[463] = ATTR_IS;
-  ATTRIBUTE_NAMES[464] = ATTR_KEYSPLINES;
-  ATTRIBUTE_NAMES[465] = ATTR_MAXSIZE;
-  ATTRIBUTE_NAMES[466] = ATTR_OFFSET;
-  ATTRIBUTE_NAMES[467] = ATTR_PRESERVEASPECTRATIO;
-  ATTRIBUTE_NAMES[468] = ATTR_ROWSPACING;
-  ATTRIBUTE_NAMES[469] = ATTR_SRCSET;
-  ATTRIBUTE_NAMES[470] = ATTR_VERSION;
-  ATTRIBUTE_NAMES[471] = ATTR_CONTENTEDITABLE;
-  ATTRIBUTE_NAMES[472] = ATTR_CONTENT;
-  ATTRIBUTE_NAMES[473] = ATTR_DEPTH;
-  ATTRIBUTE_NAMES[474] = ATTR_FONT_STRETCH;
-  ATTRIBUTE_NAMES[475] = ATTR_FONTWEIGHT;
-  ATTRIBUTE_NAMES[476] = ATTR_FONTSTYLE;
-  ATTRIBUTE_NAMES[477] = ATTR_FONTFAMILY;
-  ATTRIBUTE_NAMES[478] = ATTR_FONT_VARIANT;
-  ATTRIBUTE_NAMES[479] = ATTR_FILTERUNITS;
-  ATTRIBUTE_NAMES[480] = ATTR_FONT_SIZE;
-  ATTRIBUTE_NAMES[481] = ATTR_LETTER_SPACING;
-  ATTRIBUTE_NAMES[482] = ATTR_MULTIPLE;
-  ATTRIBUTE_NAMES[483] = ATTR_ONSTOP;
-  ATTRIBUTE_NAMES[484] = ATTR_POSTER;
-  ATTRIBUTE_NAMES[485] = ATTR_PATTERN;
-  ATTRIBUTE_NAMES[486] = ATTR_PATTERNCONTENTUNITS;
-  ATTRIBUTE_NAMES[487] = ATTR_STITCHTILES;
-  ATTRIBUTE_NAMES[488] = ATTR_TEXT_RENDERING;
-  ATTRIBUTE_NAMES[489] = ATTR_TEXT_ANCHOR;
-  ATTRIBUTE_NAMES[490] = ATTR_TEXT;
-  ATTRIBUTE_NAMES[491] = ATTR_WIDTH;
-  ATTRIBUTE_NAMES[492] = ATTR_COLUMNSPAN;
-  ATTRIBUTE_NAMES[493] = ATTR_COLUMNALIGN;
-  ATTRIBUTE_NAMES[494] = ATTR_COLUMNWIDTH;
-  ATTRIBUTE_NAMES[495] = ATTR_INPUTMODE;
-  ATTRIBUTE_NAMES[496] = ATTR_ONCUT;
-  ATTRIBUTE_NAMES[497] = ATTR_REQUIREDFEATURES;
-  ATTRIBUTE_NAMES[498] = ATTR_REQUIREDEXTENSIONS;
-  ATTRIBUTE_NAMES[499] = ATTR_VALUETYPE;
-  ATTRIBUTE_NAMES[500] = ATTR_ELEVATION;
-  ATTRIBUTE_NAMES[501] = ATTR_VIEWBOX;
-  ATTRIBUTE_NAMES[502] = ATTR_DX;
-  ATTRIBUTE_NAMES[503] = ATTR_RX;
+  ATTRIBUTE_NAMES[399] = ATTR_ICON;
+  ATTRIBUTE_NAMES[400] = ATTR_KERNING;
+  ATTRIBUTE_NAMES[401] = ATTR_ONUNLOAD;
+  ATTRIBUTE_NAMES[402] = ATTR_ONINVALID;
+  ATTRIBUTE_NAMES[403] = ATTR_ONINPUT;
+  ATTRIBUTE_NAMES[404] = ATTR_POINTS;
+  ATTRIBUTE_NAMES[405] = ATTR_POINTSATY;
+  ATTRIBUTE_NAMES[406] = ATTR_SPAN;
+  ATTRIBUTE_NAMES[407] = ATTR_TRANSFORM_ORIGIN;
+  ATTRIBUTE_NAMES[408] = ATTR_VLINK;
+  ATTRIBUTE_NAMES[409] = ATTR_XLINK_HREF;
+  ATTRIBUTE_NAMES[410] = ATTR_XLINK_ROLE;
+  ATTRIBUTE_NAMES[411] = ATTR_XMLNS_XLINK;
+  ATTRIBUTE_NAMES[412] = ATTR_XLINK_TYPE;
+  ATTRIBUTE_NAMES[413] = ATTR_XLINK_ACTUATE;
+  ATTRIBUTE_NAMES[414] = ATTR_AUTOCOMPLETE;
+  ATTRIBUTE_NAMES[415] = ATTR_AUTOCAPITALIZE;
+  ATTRIBUTE_NAMES[416] = ATTR_COLOR_PROFILE;
+  ATTRIBUTE_NAMES[417] = ATTR_COLOR_INTERPOLATION;
+  ATTRIBUTE_NAMES[418] = ATTR_COLOR_INTERPOLATION_FILTERS;
+  ATTRIBUTE_NAMES[419] = ATTR_EXPONENT;
+  ATTRIBUTE_NAMES[420] = ATTR_FLOOD_OPACITY;
+  ATTRIBUTE_NAMES[421] = ATTR_NUMOCTAVES;
+  ATTRIBUTE_NAMES[422] = ATTR_ONLOAD;
+  ATTRIBUTE_NAMES[423] = ATTR_ONMOUSEENTER;
+  ATTRIBUTE_NAMES[424] = ATTR_ONFOCUSIN;
+  ATTRIBUTE_NAMES[425] = ATTR_ONZOOM;
+  ATTRIBUTE_NAMES[426] = ATTR_ONMOUSELEAVE;
+  ATTRIBUTE_NAMES[427] = ATTR_ONMOUSEUP;
+  ATTRIBUTE_NAMES[428] = ATTR_ONMOUSEOUT;
+  ATTRIBUTE_NAMES[429] = ATTR_ONMOUSEDOWN;
+  ATTRIBUTE_NAMES[430] = ATTR_RQUOTE;
+  ATTRIBUTE_NAMES[431] = ATTR_STROKE_DASHARRAY;
+  ATTRIBUTE_NAMES[432] = ATTR_STROKE_LINEJOIN;
+  ATTRIBUTE_NAMES[433] = ATTR_STROKE;
+  ATTRIBUTE_NAMES[434] = ATTR_STROKE_WIDTH;
+  ATTRIBUTE_NAMES[435] = ATTR_COMPACT;
+  ATTRIBUTE_NAMES[436] = ATTR_CLIP_RULE;
+  ATTRIBUTE_NAMES[437] = ATTR_CLIPPATHUNITS;
+  ATTRIBUTE_NAMES[438] = ATTR_DISPLAYSTYLE;
+  ATTRIBUTE_NAMES[439] = ATTR_GLYPH_ORIENTATION_HORIZONTAL;
+  ATTRIBUTE_NAMES[440] = ATTR_HTTP_EQUIV;
+  ATTRIBUTE_NAMES[441] = ATTR_LOOP;
+  ATTRIBUTE_NAMES[442] = ATTR_SCOPED;
+  ATTRIBUTE_NAMES[443] = ATTR_SHAPE_RENDERING;
+  ATTRIBUTE_NAMES[444] = ATTR_SHAPE;
+  ATTRIBUTE_NAMES[445] = ATTR_STOP_COLOR;
+  ATTRIBUTE_NAMES[446] = ATTR_TEMPLATE;
+  ATTRIBUTE_NAMES[447] = ATTR_ABBR;
+  ATTRIBUTE_NAMES[448] = ATTR_ATTRIBUTETYPE;
+  ATTRIBUTE_NAMES[449] = ATTR_COORDS;
+  ATTRIBUTE_NAMES[450] = ATTR_CHARSET;
+  ATTRIBUTE_NAMES[451] = ATTR_NOHREF;
+  ATTRIBUTE_NAMES[452] = ATTR_ONDRAGENTER;
+  ATTRIBUTE_NAMES[453] = ATTR_ONDRAGEND;
+  ATTRIBUTE_NAMES[454] = ATTR_ONDRAGDROP;
+  ATTRIBUTE_NAMES[455] = ATTR_OPERATOR;
+  ATTRIBUTE_NAMES[456] = ATTR_ONDRAGSTART;
+  ATTRIBUTE_NAMES[457] = ATTR_STARTOFFSET;
+  ATTRIBUTE_NAMES[458] = ATTR_AS;
+  ATTRIBUTE_NAMES[459] = ATTR_BIAS;
+  ATTRIBUTE_NAMES[460] = ATTR_CLASSID;
+  ATTRIBUTE_NAMES[461] = ATTR_COLS;
+  ATTRIBUTE_NAMES[462] = ATTR_CLOSURE;
+  ATTRIBUTE_NAMES[463] = ATTR_CLASS;
+  ATTRIBUTE_NAMES[464] = ATTR_KEYSYSTEM;
+  ATTRIBUTE_NAMES[465] = ATTR_LOWSRC;
+  ATTRIBUTE_NAMES[466] = ATTR_MINSIZE;
+  ATTRIBUTE_NAMES[467] = ATTR_PRESERVEALPHA;
+  ATTRIBUTE_NAMES[468] = ATTR_ROWSPAN;
+  ATTRIBUTE_NAMES[469] = ATTR_ROWS;
+  ATTRIBUTE_NAMES[470] = ATTR_SUBSCRIPTSHIFT;
+  ATTRIBUTE_NAMES[471] = ATTR_ALTTEXT;
+  ATTRIBUTE_NAMES[472] = ATTR_CONTROLS;
+  ATTRIBUTE_NAMES[473] = ATTR_CONTEXTMENU;
+  ATTRIBUTE_NAMES[474] = ATTR_ENCTYPE;
+  ATTRIBUTE_NAMES[475] = ATTR_FILTER;
+  ATTRIBUTE_NAMES[476] = ATTR_FONT_WEIGHT;
+  ATTRIBUTE_NAMES[477] = ATTR_FONT_STYLE;
+  ATTRIBUTE_NAMES[478] = ATTR_FONT_FAMILY;
+  ATTRIBUTE_NAMES[479] = ATTR_FONT_SIZE_ADJUST;
+  ATTRIBUTE_NAMES[480] = ATTR_FONTSIZE;
+  ATTRIBUTE_NAMES[481] = ATTR_KEYTIMES;
+  ATTRIBUTE_NAMES[482] = ATTR_LIST;
+  ATTRIBUTE_NAMES[483] = ATTR_RT;
+  ATTRIBUTE_NAMES[484] = ATTR_ONSTART;
+  ATTRIBUTE_NAMES[485] = ATTR_PATTERNTRANSFORM;
+  ATTRIBUTE_NAMES[486] = ATTR_PATTERNUNITS;
+  ATTRIBUTE_NAMES[487] = ATTR_RESTART;
+  ATTRIBUTE_NAMES[488] = ATTR_SYSTEMLANGUAGE;
+  ATTRIBUTE_NAMES[489] = ATTR_TEXT_DECORATION;
+  ATTRIBUTE_NAMES[490] = ATTR_TEXTLENGTH;
+  ATTRIBUTE_NAMES[491] = ATTR_WRITING_MODE;
+  ATTRIBUTE_NAMES[492] = ATTR_ACCUMULATE;
+  ATTRIBUTE_NAMES[493] = ATTR_COLUMNLINES;
+  ATTRIBUTE_NAMES[494] = ATTR_COLUMNSPACING;
+  ATTRIBUTE_NAMES[495] = ATTR_GROUPALIGN;
+  ATTRIBUTE_NAMES[496] = ATTR_ONSUBMIT;
+  ATTRIBUTE_NAMES[497] = ATTR_REQUIRED;
+  ATTRIBUTE_NAMES[498] = ATTR_RESULT;
+  ATTRIBUTE_NAMES[499] = ATTR_VALUES;
+  ATTRIBUTE_NAMES[500] = ATTR_VALUE;
+  ATTRIBUTE_NAMES[501] = ATTR_VIEWTARGET;
+  ATTRIBUTE_NAMES[502] = ATTR_CX;
+  ATTRIBUTE_NAMES[503] = ATTR_FX;
+  ATTRIBUTE_NAMES[504] = ATTR_REFX;
 }
 
 void nsHtml5AttributeName::releaseStatics() {
@@ -2998,6 +3004,7 @@ void nsHtml5AttributeName::releaseStatics() {
   delete ATTR_ASYNC;
   delete ATTR_ALINK;
   delete ATTR_IN;
+  delete ATTR_EVENT;
   delete ATTR_ICON;
   delete ATTR_KERNELMATRIX;
   delete ATTR_KERNING;
diff --git a/parser/html/nsHtml5AttributeName.h b/parser/html/nsHtml5AttributeName.h
index 7e6d8e6e9e85..057c53dbcc82 100644
--- a/parser/html/nsHtml5AttributeName.h
+++ b/parser/html/nsHtml5AttributeName.h
@@ -460,6 +460,7 @@ class nsHtml5AttributeName {
   static nsHtml5AttributeName* ATTR_ASYNC;
   static nsHtml5AttributeName* ATTR_ALINK;
   static nsHtml5AttributeName* ATTR_IN;
+  static nsHtml5AttributeName* ATTR_EVENT;
   static nsHtml5AttributeName* ATTR_ICON;
   static nsHtml5AttributeName* ATTR_KERNELMATRIX;
   static nsHtml5AttributeName* ATTR_KERNING;