var popUpWin=0;
function popUpWindow(URLStr, params, left, top, width, height){
	if(params==""){params="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbar=no,resizable=no,copyhistory=no";}
	params = params+',width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top;
  if(popUpWin){
	if(!popUpWin.closed){popUpWin.close();}
  }
  popUpWin = open(URLStr, 'popUpWin', params);
}