var popUpWin=0;
function popUpWindow(URLStr, width, height) {
if(popUpWin) if(!popUpWin.closed) popUpWin.close();
var left = (screen.width/2) - width/2;
var top = (screen.height/2) - height/2;
popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}