var dom = (document.getElementsByTagName) ? true : false;
var  ie = (document.getElementsByTagName && document.all) ?  true : false;

document.onmouseover = function(e){
	catchevent(e);
}

document.onmouseout = function(e){
	catchevent(e);
}


function catchevent(e) {
	if (e == null) e = window.event;

	eventSrc = (ie) ? e.srcElement : e.target;
	eventSrcType = eventSrc.nodeName;
	eventType = e.type;
               
	// rollover functionality for images (mouseover/ mouseout)
	if(eventSrcType == "IMG" || (eventSrcType == "INPUT"  && eventSrc.type=="image")){
		if(eventType == "mouseover"){
			eventSrc.src = eventSrc.src.replace (new RegExp("_0","g"),"_1");
		}
		if(eventType == "mouseout"){
			eventSrc.src = eventSrc.src.replace (new RegExp("_1","g"),"_0");
		}	
	}
}