function changeStyle(id,e) {
	var style="hidden";
	if (e=="1") style="visible";
	if (document.getElementById) document.getElementById(id).style.visibility = style;
}
function open_window(url,w,h) {
	if(w==0) w=500;
	if(h==0) h=400;
	window.open(url,'Zoom','toolbar=0,location=0,directories=0,status=0,scrollbars=0,resizable=1,copyhistory=0,menuBar=0,top=5,left=5,width='+w+',height='+h);
}