/////////////////////////////////////////
// DOM ROLLOVERS TECHNIQUE SETUP START //
/////////////////////////////////////////

function setupRollovers() {
	if (!document.getElementsByTagName)
		return;
	var all_links = document.getElementsByTagName('a');
	for (var i = 0; i < all_links.length; i++) {
		var link = all_links[i];
		if (link.className &&
		    (' ' + link.className + ' ').indexOf(' rollover ') != -1)
		{
		  if (link.childNodes &&
		      link.childNodes.length == 1 &&
		      link.childNodes[0].nodeName.toLowerCase() == 'img') {
		  link.onmouseover = mouseover;
		  link.onmouseout = 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);
	if (!target) return;

	var img_tag = target.childNodes[0];

	img_tag.src = img_tag.src.replace(/(\.[^.]+)$/, '_over$1');
}

function mouseout(e) {
	var target = findTarget(e);
	if (!target) return;

	var img_tag = target.childNodes[0];

	img_tag.src = img_tag.src.replace(/_over(\.[^.]+)$/, '$1');
}

window.onload = setupRollovers;

///////////////////////////////////////
// DOM ROLLOVERS TECHNIQUE SETUP END //
///////////////////////////////////////