// JavaScript Document
function rollover(param){ 
	var anchors = document.getElementById(param); 
	var newAnchor = anchors.src.split('.gif');
	anchors.src=newAnchor[0]+'_over.gif';
}

function norollover(param){ 
	var anchors = document.getElementById(param); 
	var newAnchor = anchors.src.split('.gif');
	if (newAnchor[0].indexOf('_over')!=-1) {
		var initArchor=newAnchor[0].split('_over');
	}
		anchors.src=initArchor[0]+'.gif';
}