function hover(who, baseClass, what) {
	var current;
	
	eval('current = who.className.match(/(Sel)?'+baseClass+'(Hover)?/);');
	current = current[0];
	
	if(what && current && current.search(/Hover$/) == -1) {
		eval('who.className = who.className.replace(/'+current+'/, "'+current+'Hover");');
	} else if(!what && current && current.search(/Hover$/) != -1) {
		eval('who.className = who.className.replace(/'+current+'/, "'+current.replace(/Hover$/, '')+'");');
	}
}

function fixPNG(who) {
	var isIE = (navigator.appName == "Microsoft Internet Explorer" && navigator.userAgent.indexOf('Opera') == -1);
	if(isIE) {
		// filter for MSIE 6.x and 5.5
		var ie6xFilter = /^.*MSIE [6]\.[0-9].*$/;
		var ie55Filter = /^.*MSIE [5].*$/;
		
		if(ie6xFilter.test(navigator.userAgent) || ie55Filter.test(navigator.userAgent)) {
			who.onload = function(){}
			who.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src='+who.src+')';
			who.src = 'images/pixel.gif';
		}
	}
}