function createMouseOvers(){
	var p = 0, d = document.images;
	prelImgs = new Array();
	for (var i = 0; i < d.length; i++){
		var o = d[i];
		if (o.src.indexOf('_out') != -1){
			o.onmouseover = function (){swapImage(this);}
			o.onmouseout = o.onmouseover;
			prelImgs[p] = new Image ();
			prelImgs[p].src= d[i].src.substring(0,o.src.length-8)+'_over.jpg';
			p++;
		}
	}
}

function swapImage(o){
	var s = o.src;
	o.src = s.indexOf('_over') == -1 ?
	s.substring(0,s.length-8)+'_over.png' :
	s.substring(0,s.length-9)+'_out.png';
}

function getElement(strName) {
	if (!document.all && !document.getElementById)
		return;
	if (document.all) {
		return eval("document.all."+strName);
	} else if(document.getElementById){
		return document.getElementById(strName);
	}
}

window.onload = createMouseOvers