function right(e)
  { var msg = "右クリックできません";
   if (navigator.appName == 'Netscape' && e.which == 3)
    { alert(msg);return false;}
   else
   if (navigator.appName == 'Microsoft Internet Explorer' && event.button==2)
    { alert(msg);return false;}
   return true; 
  }
document.onmousedown = right;

function wopen1()
  { window.open("a.html","WindowOpen1","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=300,height=200")}
function wopen2()
  { window.open("b.html","WindowOpen2","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=240,height=120")}
function wopen3()
  { window.open("c.html","WindowOpen3","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=100,height=100")}
function wopen4()
  { window.open("d.html","WindowOpen4","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=100,height=100")}