Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 7207)
+++ /CKEditor/trunk/CHANGES.html	(revision 7208)
@@ -59,4 +59,5 @@
 		<li><a href="http://dev.ckeditor.com/ticket/7619">#7619</a> : [IE] IFrame shim now consolidate editor dialog to avoid having it masked by embeddeds.</li>
 		<li><a href="http://dev.ckeditor.com/ticket/7900">#7900</a> : [FF] Copy/Paste table cells no longer breaks Table dialog.</li>
+		<li><a href="http://dev.ckeditor.com/ticket/7243">#7243</a> : Inline JavaScript events may have been corrupted.</li>
 		<li>Updated the following language files:<ul>
 			<li><a href="http://dev.ckeditor.com/ticket/8128">#8128</a> : Italian;</li>
Index: /CKEditor/trunk/_source/plugins/htmldataprocessor/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/htmldataprocessor/plugin.js	(revision 7207)
+++ /CKEditor/trunk/_source/plugins/htmldataprocessor/plugin.js	(revision 7208)
@@ -45,12 +45,12 @@
 			return false;
 
-        // 1. For IE version >=8,  empty blocks are displayed correctly themself in wysiwiyg;
-        // 2. For the rest, at least table cell and list item need no filler space.
-        // (#6248)
-        if ( fromSource && CKEDITOR.env.ie &&
-                ( document.documentMode > 7
-                || block.name in CKEDITOR.dtd.tr
-                || block.name in CKEDITOR.dtd.$listItem ) )
-            return false;
+	// 1. For IE version >=8,  empty blocks are displayed correctly themself in wysiwiyg;
+	// 2. For the rest, at least table cell and list item need no filler space.
+	// (#6248)
+	if ( fromSource && CKEDITOR.env.ie &&
+		( document.documentMode > 7
+			|| block.name in CKEDITOR.dtd.tr
+			|| block.name in CKEDITOR.dtd.$listItem ) )
+		return false;
 
 		var lastChild = lastNoneSpaceChild( block );
@@ -290,5 +290,5 @@
 
 	var protectElementRegex = /<(a|area|img|input)\b([^>]*)>/gi,
-		protectAttributeRegex = /\b(href|src|name)\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|(?:[^ "'>]+))/gi;
+		protectAttributeRegex = /\b(on\w+|href|src|name)\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|(?:[^ "'>]+))/gi;
 
 	var protectElementsRegex = /(?:<style(?=[ >])[^>]*>[\s\S]*<\/style>)|(?:<(:?link|meta|base)[^>]*>)/gi,
@@ -306,6 +306,7 @@
 			return '<' +  tag + attributes.replace( protectAttributeRegex, function( fullAttr, attrName )
 			{
+				// Avoid corrupting the inline event attributes (#7243).
 				// We should not rewrite the existed protected attributes, e.g. clipboard content from editor. (#5218)
-				if ( attributes.indexOf( 'data-cke-saved-' + attrName ) == -1 )
+				if ( !/^on/.test( attrName ) && attributes.indexOf( 'data-cke-saved-' + attrName ) == -1 )
 					return ' data-cke-saved-' + fullAttr + ' ' + fullAttr;