var visibleVar=null;
var bV=parseInt(navigator.appVersion);
NS4=(document.layers) ? true : false;
IE4=((document.all)&&(bV>=4))?true:false;
ver4 = (NS4 || IE4) ? true : false;
styleObj=(IE4)?".style":"";
if (NS4) {
 layerStyleRef="layer.";
 layerRef="document.layers";
 visibleVar="show";
}else{
 layerStyleRef="layer.style.";
 layerRef="document.all";
 styleSwitch=".style";
 visibleVar="visible";
}

if(document.layers) {
  window.captureEvents(Event.MOUSEDOWN);
  window.onmousedown = function(e)
  {
   if(e.target==document)return false;
  }
}else{
  document.onmousedown = function(){return false}
}

document.oncontextmenu = function(){return false}