new function(){
	function imageReplace(){
		var btnClassName = "btn";
		var objAll = document.getElementsByTagName ? document.getElementsByTagName("*") : document.all;
		for (var i = 0; i < objAll.length; i++) {
			var btn=false;
			var eltClass = objAll[i].className.split(/\s+/);
			for (var j = 0; j < eltClass.length; j++) {
				if (eltClass[j] == btnClassName)btn = true;
			}
			if(btn == true){
				if(objAll[i].originalSrc){
					objAll[i].rolloverSrc = objAll[i].originalSrc.replace(/(\.gif|\.jpg|\.png)$/,"_on$1");
						objAll[i].onmouseover = function(){
							this.style.filter ="progid:DXImageTransform.Microsoft.AlphaImageLoader(src="+this.rolloverSrc+",sizingMethod='scale')";
						}
						objAll[i].onmouseout = function(){
							this.style.filter ="progid:DXImageTransform.Microsoft.AlphaImageLoader(src="+this.originalSrc+",sizingMethod='scale')";
						}
				}else{
					if(objAll[i].nodeName=="IMG"){
						objAll[i].originalSrc = objAll[i].src
						objAll[i].rolloverSrc = objAll[i].src.replace(/(\.gif|\.jpg|\.png)$/,"_on$1")
						objAll[i].onmouseover = function(){
							this.src = this.rolloverSrc;
						}
						objAll[i].onmouseout = function(){
							this.src = this.originalSrc;
						}
					}
				}
			}
		}
	}
	function getElementsByClassName(className){
		var i, j, eltClass;
		var objAll = document.getElementsByTagName ? document.getElementsByTagName("*") : document.all;
		var objCN = new Array();
		for (i = 0; i < objAll.length; i++) {
			eltClass = objAll[i].className.split(/\s+/);
			for (j = 0; j < eltClass.length; j++) {
				if (eltClass[j] == className) {
					objCN.push(objAll[i]);
					break;
				}
			}
		}
		return objCN;
	}
	function addEvent(elm,listener,fn){
		try{
			elm.addEventListener(listener,fn,false);
		}catch(e){
			elm.attachEvent("on"+listener,fn);
		}
	}
	addEvent(window,"load",imageReplace)
}