if(window.HTMLElement) {
  HTMLElement.prototype.__defineSetter__("outerHTML",function(sHTML){
      var r=this.ownerDocument.createRange();
      r.setStartBefore(this);
      var df=r.createContextualFragment(sHTML);
      this.parentNode.replaceChild(df,this);
      return sHTML;
      });

  HTMLElement.prototype.__defineGetter__("outerHTML",function(){
      var attr;
      var attrs=this.attributes;
      var str="<"+this.tagName.toLowerCase();
      for(var i=0;i<attrs.length;i++){
      attr=attrs[i];
      if(attr.specified)
      str+=" "+attr.name+'="'+attr.value+'"';
      }
      if(!this.canHaveChildren)
      return str+">";
      return str+">"+this.innerHTML+"</"+this.tagName.toLowerCase()+">";
      });

  HTMLElement.prototype.__defineGetter__("canHaveChildren",function(){
      switch(this.tagName.toLowerCase()){
      case "area":
      case "base":
      case "basefont":
      case "col":
      case "frame":
      case "hr":
      case "img":
      case "br":
      case "input":
      case "isindex":
      case "link":
      case "meta":
      case "param":
      return false;
      }
      return true;

      });
}