var popUpWin=0;
	function popUpWindow(URLStr, left, top, width, height) {
		if(popUpWin) {
			if(!popUpWin.closed)
				popUpWin.close();
  		}
		/*inserire yes or no a seconda del parametro
  		popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=true,resizable=false,copyhistory=no,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
		*/
		popUpWin = open(URLStr, 'popUpWin','width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+',scrollbars=yes, menubar=yes');

	}
	
	function popWinClose(){
		if(popUpWin) {
			if(!popUpWin.closed)
				popUpWin.close();
  		}
	}