window.onload = function() {
  document.onselectstart = function() {return false;} // ie
  document.onmousedown = function() {return false;} // mozilla
}


/* You can attach the events to any element. In the following example
I'll disable selecting text in an element with the id 'content'. */

window.onload = function() {
  var element = document.getElementById('content');
  element.onselectstart = function () { return false; } // ie
  element.onmousedown = function () { return false; } // mozilla
}

 var isNS = (navigator.appName == "Netscape") ? 1 : 0;  if(navigator.appName == "Netscape") document.captureEvents(Event.MOUSEDOWN||Event.MOUSEUP);  function mischandler(){   return false; }  function mousehandler(e){ 	var myevent = (isNS) ? e : event; 	var eventbutton = (isNS) ? myevent.which : myevent.button;    if((eventbutton==2)||(eventbutton==3)) return false; } document.oncontextmenu = mischandler; document.onmousedown = mousehandler; document.onmouseup = mousehandler;