jQuery Bump Animation Fixed

jquery.bump.js

// taken from http://daveymorris.co.uk/web-development/bump-jquery-plugin-bounce
// improved with additional options

(function($){
    $.bump = function(el, options){

        // Some object and DOM instansiation to make traversing the DOM less expensive
        var base = this;
        base.$el = $(el);
        base.el = el;
        base.$el.data("bump", base);

        base.init = function(){
            base.options = $.extend({},$.bump.defaultOptions, options);
            base.bumping = false;
            if(base.options.autostart)
                base.startbump(); // Autostart the bump if we need to
        };

        // Start the bump and set the timers and handles
        base.startbump = function(event){
            if(base.bumping)
                return true;
            base.$el.bind(base.options.bind,base.stopbump);
            base.options.beforeAnim();
            base.bumping = true;

            base.timeval = setInterval(function(){base.$el.effect("bounce",base.options.effectOptions || {},base.options.duration,base.options.callback);},base.options.gap);
        };

        // Stop the bump and remove handles
        base.stopbump = function(event){
            if(!base.bumping)
                return false;
            base.options.beforeStop();
            base.$el.unbind(base.options.bind,base.stopbump);
            clearInterval(base.timeval); // Clear and stop the timer
            base.bumping = false;
            base.options.afterStop();
        };

        // Run initializer
        base.init();
    };

    $.bump.defaultOptions = {
        effectOptions: {},              // options handed to bounce effect
        duration: 250,					// How many miliseconds the bounce should last
        gap: 2000,						// How many miliseconds between bounces
        autostart: true,				// Whether we start straight away or wait
        beforeAnim: function(){},		// Runs before the bumping starts
        beforeStop: function(){},		// Runs just before the bumping is stopped
        afterStop: function(){},		// Runs after the bumping has finished
        bind: "mouseenter"				// The handle we want the bumping to stop on, "click etc"
    };

    $.fn.bump = function(options){
        return this.each(function(){
            (new $.bump(this, options));
        });
    };

})(jQuery);