/** @see com.aptana.ide.editors.unified.ContributedBrowser#execute(java.lang.String) */
 public boolean execute(String script) {
   nsIDOMDocument document = internalGetDocument();
   if (document != null) {
     nsIDOMElement se = document.createElement("script"); // $NON-NLS-1$
     nsIDOMHTMLScriptElement scriptBlock =
         (nsIDOMHTMLScriptElement)
             se.queryInterface(nsIDOMHTMLScriptElement.NS_IDOMHTMLSCRIPTELEMENT_IID);
     String s2 =
         "if("
             + script
             + "){"
             + "document.getElementById('execute').setAttribute('text','success');}"; //$NON-NLS-1$
                                                                                      // //$NON-NLS-2$ //$NON-NLS-3$
     scriptBlock.setText(s2);
     nsIDOMElement executeBlock = document.getElementById("execute"); // $NON-NLS-1$
     if (executeBlock == null) {
       executeBlock = document.createElement("div"); // $NON-NLS-1$
       executeBlock.setAttribute("id", "execute"); // $NON-NLS-1$ //$NON-NLS-2$
       nsIDOMNode body = document.getElementsByTagName("body").item(0); // $NON-NLS-1$
       body.appendChild(executeBlock);
     }
     executeBlock.setAttribute("text", ""); // $NON-NLS-1$ //$NON-NLS-2$
     nsIDOMNode head = document.getElementsByTagName("head").item(0); // $NON-NLS-1$
     head.appendChild(scriptBlock);
     executeBlock = document.getElementById("execute"); // $NON-NLS-1$
     return "success".equals(executeBlock.getAttribute("text")); // $NON-NLS-1$ //$NON-NLS-2$
   } else {
     return false;
   }
 }