// rollover script

window.onload=function(){ 
	var divs=document.getElementsByTagName('div'); 
	var divs_ln=divs.length; 
	for(var i=0;i<divs_ln;i++){ 
		if(divs[i].className.indexOf('_overs')!=-1){ 
			divs[i].onmouseover=swapOne; 
			divs[i].onmouseout=swapTwo; 
		} 
	} 
} 
function swapOne(){ 
	var divs=this.getElementsByTagName('div'); 
	divs[0].style.visibility="hidden"; 
	divs[1].style.visibility="visible";
} 
function swapTwo(){ 
	var divs=this.getElementsByTagName('div'); 
	divs[0].style.visibility="visible"; 
	divs[1].style.visibility="hidden"; 
}