function setbut(bn){
	document.getElementById("xmen"+String(bn)).className="x2";
}
function pops(_name){
	_name= _name + ".html";
	_x=screen.width-500;
	F1 = window.open(_name,"Frage","width=500,height=400,left="+_x+",top=20,location=no,menubar=no,resizable=no,scrollbars=yes,status=no,toolbar=no");
}