//*** This code is copyright 2003 by Gavin Kistner, gavin@refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
//*** Reuse or modification is free provided you abide by the terms of that license.
//*** (Including the first two lines above in your source code satisfies the conditions.)


//***Find the CSS rule by its selector text.
//***e.g. FindRule(document.styleSheets[0],'a.selected').style.fontWeight='bold';
function FindRule(ss,selText){
	if (!ss) return;
	if (ss.cssRulesCache==null) ss.cssRulesCache={};
	var cssRulesCache=ss.cssRulesCache;
	//Following line fixes IEMac at the expense of Safari
	//if (navigator && navigator.platform && navigator.platform=="MacPPC") selText = selText.replace(/(^|(\s+))([\#\.])/gi,"$2*$3");
	selText=selText.toLowerCase(); //screw case sensitivity; IE and Mozilla don't agree on case for elements
	if (cssRulesCache[selText]) return cssRulesCache[selText];
	var rules = document.all?ss.rules:ss.cssRules;
	for (var i=0;i<rules.length;i++) if (rules[i].selectorText.toLowerCase()==selText) return cssRulesCache[selText]=rules[i];
	return null;
}

//***Cross-browser method for inserting a new rule into an existing stylesheet.
//***e.g. AddRule(document.styleSheets[0],'a:link','color:blue; text-decoration:underline');
function AddRule(ss,selector,styles){
	if (!ss) return false;
	if (ss.insertRule) return ss.insertRule(selector+' {'+styles+'}',ss.cssRules.length);
	if (ss.addRule){
		ss.addRule(selector,styles);
		return true;
	}
	return false;
}