Userscripts.org

// ==UserScript==
// @name           Remove EMBEDs/OBJECTs/IFRAMEs
// @namespace      http://davidjcobb.deviantart.com/
// @description    Allows you to remove EMBEDs and OBJECTs. Useful for taking out advertisements.
// @include        *
// ==/UserScript==

try{
   if(RAND) window.RAND=Math.floor(Math.random()*100000000000000000001);
}catch(NORAND){
   window.RAND=Math.floor(Math.random()*100000000000000000001);
}

window.a=
function(){
   while (document.getElementsByTagName("EMBED").length) {
      var b=document.createElement("DIV");
      b.style.width=(document.getElementsByTagName("EMBED")[0].width)?document.getElementsByTagName("EMBED")[0].width:"";
      b.style.height=(document.getElementsByTagName("EMBED")[0].height)?document.getElementsByTagName("EMBED")[0].height:"";
      document.getElementsByTagName("EMBED")[0].parentNode.replaceChild(b,document.getElementsByTagName("EMBED")[0]);
   }
   while (document.getElementsByTagName("OBJECT").length) {
      var b=document.createElement("DIV");
      b.style.width=(document.getElementsByTagName("OBJECT")[0].width)?document.getElementsByTagName("OBJECT")[0].width:"";
      b.style.height=(document.getElementsByTagName("OBJECT")[0].height)?document.getElementsByTagName("OBJECT")[0].height:"";
      document.getElementsByTagName("OBJECT")[0].parentNode.replaceChild(b,document.getElementsByTagName("OBJECT")[0]);
   }
   alert("All EMBEDs and OBJECTs removed from the page.");
};

window.c=
function(){
   while (document.getElementsByTagName("IFRAME").length) {
      var b=document.createElement("DIV");
      b.style.width=(document.getElementsByTagName("IFRAME")[0].width)?document.getElementsByTagName("IFRAME")[0].width:"";
      b.style.height=(document.getElementsByTagName("IFRAME")[0].height)?document.getElementsByTagName("IFRAME")[0].height:"";
      document.getElementsByTagName("IFRAME")[0].parentNode.replaceChild(b,document.getElementsByTagName("IFRAME")[0]);
   }
   alert("All IFRAMEs removed from the page.");
};

eval("unsafeWindow.DJC_EMBEDOBJECTREMOVE_"+RAND+"=a;");
eval("unsafeWindow.DJC_IFRAMEREMOVE_"+RAND+"=c;");
eval("GM_registerMenuCommand('Remove OBJECTs and EMBEDs', unsafeWindow.DJC_EMBEDOBJECTREMOVE_"+RAND+");");
eval("GM_registerMenuCommand('Remove IFRAMEs', unsafeWindow.DJC_IFRAMEREMOVE_"+RAND+");");