//=====================================================================   
//  DOM Image Rollover v3 (hover)   
//   
//  Demo: http://chrispoole.com/scripts/dom_image_rollover_hover   
//=====================================================================   
//  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',this.className.match(/domroll (\S+)/)[1])   
            }   
            imgarr[i].onmouseout=function(){   
                this.setAttribute('src',this.getAttribute('xsrc'))   
            }   
        }   
    }   
}   
  
window.onload = domRollover;