// Suckerfish dropdowns
// As from: http://www.htmldog.com/articles/suckerfish/dropdowns/
sfHover = function() {	
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}

// DOM-based rollovers
// Creates rollover on any images with a class of "hover" who have an rollover image called <name>_roll.<gif|jpg>
function initRollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'rollover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_roll'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_roll'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

// Load functions on window onload. First function uses attachEvent for IE only
if (window.attachEvent) {
	window.attachEvent("onload", sfHover);
}
// This one is for all browsers
window.onload = function() {
	initRollovers();
}