function infowin(url) {
	var width = 600;
	var height = 400;
	var left = (screen.width-width)/2;
	var top = (screen.height*0.8-height)/2;
		
	newWin = window.open(url, "info", "width="+width+",height="+height+",scrollbars=yes,toolbar=no,location=no,directories=no,resizable=no,status=no,menubar=no,screenX=100,screenY=100, left="+left+", top="+top);
}