function winop(url,width,height)
{
 windop = window.open(url,"mywin","height="+height+",width="+width+",left=200,top=150,scrollbars=1,resizable=1");
}
function show_hide(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
	var ar = document.getElementsByTagName("div"); 
		if(el.style.display != "block"){ 
			for (var i=0; i<ar.length; i++){
				if (ar[i].className=="hdiv") 
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}