var objWin;			//hold a reference to new window

function openWindow(docref) {
	objWin = window.open(docref,"new_win","resizable=yes," +
			 "scrollbars=yes,toolbar=yes,location=no,directories=no,status=no," +
			 "menubar=no,width=750,height=450,top=5,left=5");
	/*objWinTimer = window.setTimeout("closeWindow()",600000);*/
	}
	
function closeWindow() {
	objWin.close();
	}