//=====================================================================

//  DOM Image Rollover v3 (hover)

//

//  Demo: http://chrispoole.com/scripts/dom_image_rollover_hover

//  Script featured on: Dynamic Drive (http://www.dynamicdrive.com)

//=====================================================================

//  copyright Chris Poole

//  http://chrispoole.com

//  This software is licensed under the MIT License 

//  <http://opensource.org/licenses/mit-license.php>

//=====================================================================



function domRollover() {

	if (navigator.userAgent.match(/Opera (\S+)/)) {

		var operaVersion = parseInt(navigator.userAgent.match(/Opera (\S+)/)[1]);

	}

	if (!document.getElementById||operaVersion <7) return;

	var imgarr=document.getElementsByTagName('img');

	var imgPreload=new Array();

	var imgSrc=new Array();

	var imgClass=new Array();

	for (i=0;i<imgarr.length;i++){

		if (imgarr[i].className.indexOf('domroll')!=-1){

			imgSrc[i]=imgarr[i].getAttribute('src');

			imgClass[i]=imgarr[i].className;

			imgPreload[i]=new Image();

			if (imgClass[i].match(/domroll (\S+)/)) {

				imgPreload[i].src = imgClass[i].match(/domroll (\S+)/)[1]

			}

			imgarr[i].setAttribute('xsrc', imgSrc[i]);

			imgarr[i].onmouseover=function(){

				this.setAttribute('src','img/'+this.className.match(/domroll (\S+)/)[1])

			}

			imgarr[i].onmouseout=function(){

				this.setAttribute('src',this.getAttribute('xsrc'))

			}

		}

	}

}

domRollover();