function openPopUp(strURL){
	if(oPopUp&&!oPopUp.closed)
		oPopUp.close();
	oPopUp = window.open(strURL,"PopUp","width=500,height=500,top=10,left=10,scrollbars=0");
}

onload = function(){window.oPopUp=null;}
onunload = function(){if(oPopUp&&!oPopUp.closed) oPopUp.close();}