/**
        *	Whatever:hover - V1.41.050927 - hover & active
        *	------------------------------------------------------------
        *	(c) 2005 - Peter Nederlof
        *	Peterned - http://www.xs4all.nl/~peterned/
        *	License  - http://creativecommons.org/licenses/LGPL/2.1/
        *
        *	Whatever:hover is free software; you can redistribute it and/or
        *	modify it under the terms of the GNU Lesser General Public
        *	License as published by the Free Software Foundation; either
        *	version 2.1 of the License, or (at your option) any later version.
        *
        *	Whatever:hover is distributed in the hope that it will be useful,
        *	but WITHOUT ANY WARRANTY; without even the implied warranty of
        *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
        *	Lesser General Public License for more details.
        *
        *	Credits and thanks to:
        *	Arnoud Berendsen, Martin Reurings, Robert Hanson
        *
        *	howto: body { behavior:url("csshover.htc"); }
        *	------------------------------------------------------------
        */

        var csshoverReg = /(^|\s)(([^a]([^ ]+)?)|(a([^#.][^ ]+)+)):(hover|active)/i,
currentSheet, doc = window.document, hoverEvents = [], activators = {
    onhover: { on: 'onmouseover', off: 'onmouseout' },
    onactive: { on: 'onmousedown', off: 'onmouseup' }
}

        function parseStylesheets() {
            if (!/MSIE (5|6)/.test(navigator.userAgent)) return;
            window.attachEvent('onunload', unhookHoverEvents);
            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 (!csshoverReg.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, '.$2' + pseudo);
            var className = (/\.([a-z0-9_-]*on(hover|active))/i).exec(newSelect)[1];
            var affected = select.replace(/:(hover|active).*$/, '');
            var elements = getElementsBySelect(affected);
            if (elements.length == 0) return;

            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;
            hookHoverEvent(node, events.on, function() { node.className += ' ' + className; });
            hookHoverEvent(node, events.off, function() { node.className = node.className.replace(new RegExp('\\s+' + className, 'g'), ''); });
        }
        function hookHoverEvent(node, type, handler) {
            node.attachEvent(type, handler);
            hoverEvents[hoverEvents.length] = {
                node: node, type: type, handler: handler
            };
        }

        function unhookHoverEvents() {
            for (var e, i = 0; i < hoverEvents.length; i++) {
                e = hoverEvents[i];
                e.node.detachEvent(e.type, e.handler);
            }
        }

        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 identify = (/\#([a-z0-9_-]+)/i).exec(select);
            if (identify) return [doc.getElementById(identify[1])];

            var classname = (/\.([a-z0-9_-]+)/i).exec(select);
            var tagName = select.replace(/(\.|\#|\:)[a-z0-9_-]+/i, '');
            var classReg = classname ? new RegExp('\\b' + classname[1] + '\\b') : false;
            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 (classReg && !classReg.test(node.className)) continue;
                    nodes[nodes.length] = node;
                }
            } return nodes;
        }