$.fn.clickURL = function() {  
        var regexp = /((ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?)/gi;  
        this.each(function() {  
            $(this).html(  
                $(this).html().replace(regexp,'<a href="$1">$1</a>')  
            );  
        });  
        return $(this);  
    }