// JavaScript Document


function initRollovers() {
	var all_links;
	var link;
	var idx;
	var tmp_image;
	
	if (!document.getElementsByTagName) {
		return;   
	}
	
	all_links = document.getElementsByTagName("a");
	
	for (idx = 0; idx < all_links.length; idx++) {
		link = all_links[idx];
		
		if (link.className && (' ' + link.className + ' ').indexOf(' rollover ') != -1) {
			if (link.childNodes && link.childNodes.length == 1 && link.childNodes[0].nodeName.toLowerCase() == 'img') {
				// Pre-load state 2 images
				tmp_image = new Image();
				tmp_image.src = link.childNodes[0].src.replace(/(\.[^.]+)$/, "_f1$1");
				// Attach listeners
				link.onmouseover = mouseover;
				link.onmouseout = mouseout;
				link.onfocus = mouseover;
				link.onblur = mouseout;
			}
		}
	}
}

function findTarget(e) {
	var target;
	
	if (window.event && window.event.srcElement) {
		target = window.event.srcElement;
	}
	else if (e && e.target) {
		target = e.target;	   
	}
	
	if (!target) return null;
	
	while (target != document.body && target.nodeName.toLowerCase() != "a") {
		target = target.parentNode;   
	}
	
	if (target.nodeName.toLowerCase() != "a") return null;
	
	return target;
}

function mouseover(e) {
	var target = findTarget(e);
	var img_tag;
	
	if (!target) return;
	
	img_tag = target.childNodes[0];
	
	if (img_tag.src.indexOf("_f1.") < 0) img_tag.src = img_tag.src.replace(/(\.[^.]+)$/, "_f1$1"); 
}

function mouseout(e) {
	var target = findTarget(e);
	var img_tag;
	
	if (!target) return;
	
	img_tag = target.childNodes[0];
	img_tag.src = img_tag.src.replace(/_f1(\.[^.]+)$/, "$1");   
}

window.onload = initRollovers;