function rollOverFunc(eElement){
		var original = eElement.src;
		
		myString = new String(original);
		rExp = /_off_/gi;
		replaceWith = new String ("_on_");
		results = myString.replace(rExp, replaceWith);
		eElement.src=results;
	}
	
	function rollOutFunc(eElement){
		var original = eElement.src;
		
		myString = new String(original);
		rExp = /_on_/gi;
		replaceWith = new String ("_off_");
		results = myString.replace(rExp, replaceWith);
		eElement.src=results;
	}