Load jQuery File to Firebug Console

jquery_firebug.js

var s = document.createElement('script');
s.setAttribute('src', 'http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js');
document.body.appendChild(s);
s.onload=function(){
  //  alert("hello")
//Js code
};
void(s);