<!--
function mouseDown(evn) {
 if (parseInt(navigator.appVersion)>3) {
  var clickButton=1;
  if (navigator.appName=="Netscape") clickButton=evn.which;
  else clickButton=event.button;
  if (clickButton!=1) {
   alert ('Use of images is restricted.');
   return false;
  }
 }
 return true;
}
if (parseInt(navigator.appVersion)>3) {
 document.onmousedown = mouseDown;
 if (navigator.appName=="Netscape") 
  document.captureEvents(Event.MOUSEDOWN);
}
//-->