function mOver(e) {
	ele = getSrcElement(e);
	var imgSrc = ele.src;
	var newSrc = imgSrc.replace(/.gif/,'-over.gif');
	ele.src = newSrc;
}
function mOut(e) {
	ele = getSrcElement(e);
	var imgSrc = ele.src;
	var newSrc = imgSrc.replace(/-over.gif/,'.gif');
	ele.src = newSrc;
}
function getSrcElement(ele) {
	if (window.event) ele = window.event;  
	var srcEle = ele.srcElement? ele.srcElement : ele.target;  
	return srcEle;
}
function addEvent(obj, evType, fn) { 
	if (obj.addEventListener) { 
		obj.addEventListener(evType, fn, false); 
		return true; 
	} else if (obj.attachEvent) { 
		var r = obj.attachEvent("on"+evType, fn); 
		return r; 
	} else { 
		return false; 
	} 
}
window.onload = function() {
	if (document.getElementById('offerMore')) {
		var imgOne = new Image();
		imgOne.src = '/images/offer-book-over.gif';
		var imgTwo = new Image();
		imgTwo.src = '/images/offer-more-over.gif';
		var links = document.getElementById('offerMore').getElementsByTagName('img');
		for (i=0;i<links.length;i++) {
			addEvent(links[i], 'mouseover', mOver);
			addEvent(links[i], 'mouseout', mOut);
		}
	}
}