function view(Url)
{
  popup=window.open(Url,"Displaywindow","left=30,top=30,width=600,height=480,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes, resizable=no");
}

function viewall(Url)
{
  popup=window.open(Url,"Displaywindow","left=30,top=30,width=600,height=480,toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes, resizable=yes");
}

function viewchess(Url)
{
    popup=window.open(Url,"Displaywindow","left=30,top=30,width=800,height=600,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes, resizable=no");
}