function stoperror(){

return true

}
window.onerror=stoperror

function show(id) {
var d = document.getElementById(id);
	for (var i = 1; i<=20; i++) {
		if (document.getElementById('answer_q'+i)) {document.getElementById('answer_q'+i).style.display='none';}
	}
if (d) {d.style.display='block';}
}



function popupWindow(url) {
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=600,height=300,screenX=150,screenY=150,top=150,left=150')
}