SoundSoftware Code Site

<attach event="ondocumentready" handler="parseStylesheets" />

<script>

/**

 *	Whatever:hover - V1.42.060206 - 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) {

			var element = doc.getElementById(identify[1]);

			return element? [element]:nodes;

		}

		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;

	}

window.parseStylesheets = parseStylesheets;

</script>