Simple JavaScript Include Function

include.js

/*
* Simple JS Include Function
* Format:   include({array_files},{callback});
* Example:  include(['script1.js','script2.js'],function(){ alert('Loaded!'); });
*/

function include(array, callback) {
    var loader = function (src, handler) {
        var script = document.createElement("script");
        script.src = src;
        script.onload = script.onreadystatechange = function () {
            script.onreadystatechange = script.onload = null;
            handler();
        };
        var head = document.getElementsByTagName("head")[0];
        (head || document.body).appendChild(script);
    };
    (function () {
        if (array.length !== 0) {
            loader(array.shift(), arguments.callee);
        } else {
            if (callback && typeof (callback) === 'function') {
                callback();
            }
        }
    })();
}