gistfile1.js

// ==UserScript==
// @name       Dev_Mode
// @namespace  http://ingensol.pl/
// @version    0.1
// @description  enter something useful
// @match      http://localhost:8080/*
// @copyright  2012+, ark_adius
// @require    http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js
// ==/UserScript==

(function() {      
    var $ = jQuery;
    var from = ':8080';
    var to = '';
    
    var blacklist = [
        /.*\/resources\/.*/
    ];
    
    function isBlacklisted(src) {
        for (var i=0; i<blacklist.length; i++) {
            var el = blacklist[i];
            if (src.match(el)) {
                return true;
            }
        }
        return false;
    };
    
    $('script').each(function() {        
        if (this.src == '' || isBlacklisted(this.src))
            return;
        var src = this.src.replace(from, to);         
        var script   = document.createElement("script");
        script.type  = "text/javascript";
        script.src   = src;        
        document.head.appendChild(script);
        console.log('inject js: ' + this.src);
    });
    $('link').each(function() {        
        if (isBlacklisted(this.href))
            return;
        var src = this.href.replace(from, to);        
        this.href = src;
        console.log('inject css: ' + this.href);
    });
})();