Add workaround to support "hover" selection of CSS elements in IE browsers. Solution uses "csshover.htc" from Peter Nederlof (http://www.xs4all.nl/~peterned/).

[SVN r30143]

css_0/csshover.htc

@@ -0,0 +1,91 @@
+<attach event="ondocumentready" handler="parseStylesheets" />
+<script language="JScript">
+/**
+ *  Pseudos - V1.30.050121 - hover & active
+ *  ---------------------------------------------
+ *  Peterned - http://www.xs4all.nl/~peterned/
+ *  (c) 2005 - Peter Nederlof
+ *
+ *  Credits  - Arnoud Berendsen 
+ *           - Martin Reurings
+ *           - Robert Hanson
+ *
+ *  howto: body { behavior:url("csshover.htc"); }
+ *  ---------------------------------------------
+ */
+
+var currentSheet, doc = window.document, activators = {
+    onhover:{on:'onmouseover', off:'onmouseout'},
+    onactive:{on:'onmousedown', off:'onmouseup'}
+}
+
+function parseStylesheets() {
+    var sheets = doc.styleSheets, l = sheets.length;
+    for(var i=0; i<l; i++) 
+        parseStylesheet(sheets[i]);
+}
+    function parseStylesheet(sheet) {
+        if(sheet.imports) {
+            try {
+                var imports = sheet.imports, l = imports.length;
+                for(var i=0; i<l; i++) parseStylesheet(sheet.imports[i]);
+            } catch(securityException){}
+        }
+
+        try {
+            var rules = (currentSheet = sheet).rules, l = rules.length;
+            for(var j=0; j<l; j++) parseCSSRule(rules[j]);
+        } catch(securityException){}
+    }
+
+    function parseCSSRule(rule) {
+        var select = rule.selectorText, style = rule.style.cssText;
+        if(!(/(^|\s)(([^a]([^ ]+)?)|(a([^#.][^ ]+)+)):(hover|active)/i).test(select) || !style) return;
+        
+        var pseudo = select.replace(/[^:]+:([a-z-]+).*/i, 'on$1');
+        var newSelect = select.replace(/(\.([a-z0-9_-]+):[a-z]+)|(:[a-z]+)/gi, '.$2' + pseudo);
+        var className = (/\.([a-z0-9_-]*on(hover|active))/i).exec(newSelect)[1];
+        var affected = select.replace(/:hover.*$/, '');
+        var elements = getElementsBySelect(affected);
+
+        currentSheet.addRule(newSelect, style);
+        for(var i=0; i<elements.length; i++)
+            new HoverElement(elements[i], className, activators[pseudo]);
+    }
+
+function HoverElement(node, className, events) {
+    if(!node.hovers) node.hovers = {};
+    if(node.hovers[className]) return;
+    node.hovers[className] = true;
+    node.attachEvent(events.on,
+        function() { node.className += ' ' + className; });
+    node.attachEvent(events.off,
+        function() { node.className = 
+            node.className.replace(new RegExp('\\s+'+className, 'g'),''); });
+}
+
+function getElementsBySelect(rule) {
+    var parts, nodes = [doc];
+    parts = rule.split(' ');
+    for(var i=0; i<parts.length; i++) {
+        nodes = getSelectedNodes(parts[i], nodes);
+    }
+    return nodes;
+}
+    function getSelectedNodes(select, elements) {
+        var result, node, nodes = [];
+        var classname = (/\.([a-z0-9_-]+)/i).exec(select);
+        var identify = (/\#([a-z0-9_-]+)/i).exec(select);
+        var tagName = select.replace(/(\.|\#|\:)[a-z0-9_-]+/i, '');
+        for(var i=0; i<elements.length; i++) {
+            result = tagName? elements[i].all.tags(tagName):elements[i].all; 
+            for(var j=0; j<result.length; j++) {
+                node = result[j];
+                if((identify && node.id != identify[1]) || (classname && !(new RegExp('\\b' +
+                    classname[1] + '\\b').exec(node.className)))) continue;
+                nodes[nodes.length] = node;
+            }
+        }
+        return nodes;
+    }
+</script>