// close and open popup
	    var theWin
	
	    function popup(theURL) {
	
		    if(theWin == null || theWin.closed) {
			    theWin = window.open(theURL, "theWin", "toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=yes,width=500,height=500,top=50,left=200");
		    } else {
			    theWin.close()
			    theWin = window.open(theURL, "theWin", "toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=yes,width=500,height=500,top=50,left=200");
		    }
	    }