// JavaScript Document
function disableRightClick(e) {
  if(!document.rightClickDisabled) { // initialize
    if(document.layers) {
      document.captureEvents(Event.MOUSEDOWN);
      document.onmousedown = disableRightClick;
    }
    else document.oncontextmenu = disableRightClick;
    return document.rightClickDisabled = true;
  }
  
  if(document.layers || (document.getElementById && !document.all)) {
    if (e.which==2||e.which==3)
      return false;
  } else return false;
}
disableRightClick();