jQuery.noConflict();
jQuery(document).ready(function($){
  $.fn.disableDoubleSubmit = function(timeout) {
    if(!timeout || timeout < 1) {
      timeout = 3000; // 3sec.
    }
    $(this).bind("submit",function() {
      var submit_buttons = $(":submit, :image",this);
      submit_buttons.attr("disabled", true);
      setTimeout(function(){
        submit_buttons.attr("disabled", false);
      },timeout);
    });
    return this;
  }
  $("form").disableDoubleSubmit(3000);
});