onerror=handleErr;

var errorHandlingMethod = "iframe";

function handleErr(msg,url,l,test)
{                                 
 var txt="There was an error on this page.\n\n";
 txt+="Error: " + msg + "\n";
 txt+="URL: " + url + "\n";
 txt+="Line: " + l + "\n\n";

 try {
   if (errorHandlingMethod == "form") {
     var existingErrorForm = document.getElementById("errorForm");
     var existingErrorElement = document.getElementById("js_error_message");

     if (existingErrorForm && existingErrorElement) {
       existingErrorElement.setAttribute("value",escape(txt));
       existingErrorForm.submit();
     } else {

       var body = document.getElementsByTagName("body")[0];

       if (body) {
         var errorForm = document.createElement("form");
         errorForm.setAttribute("action","/errors/error.jsp");
         errorForm.setAttribute("method","post");
         errorForm.setAttribute("id","errorForm");

         var errorElement = document.createElement("input");
         errorElement.setAttribute("id","js_error_message");
         errorElement.setAttribute("type","hidden");
         errorElement.setAttribute("name","js_error_message");
         errorElement.setAttribute("value",escape(txt));
         errorForm.appendChild(errorElement);

         body.appendChild(errorForm);
         document.getElementById("errorForm").submit();
       }
     }
   } else if (errorHandlingMethod == "iframe") {
     var existingErrorFrame = document.getElementById("errorFrame");

     if (existingErrorFrame) {
       existingErrorFrame.setAttribute("src","/errors/error.jsp?js_error_message=" + escape(txt));
     } else {
       var body = document.getElementsByTagName("body")[0];
       if (body) {
         var errorFrame = document.createElement("iframe");
         errorFrame.setAttribute("src","/errors/error.jsp?js_error_message=" + escape(txt));
         errorFrame.setAttribute("id","errorFrame");
         errorFrame.setAttribute("style","display:none");

         body.appendChild(errorFrame);
       }
     }
   } else if (errorHandlingMethod == "lightbox") {
     //TODO implement
   }
 } catch (err) {
   
 }

 return false;
}

function triggerError() {
  nonexistentFunction();
}