var popUpWin=0;
function popUpWindowAyuda(URLStr)
{
	if(popUpWin)
	{
	if(!popUpWin.closed) popUpWin.close();
	}
	popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbar=no,resizable=no,copyhistory=yes,width=750,height=580,left=200, top=100,screenX=250,screenY=250');
}