function AddLoadEvent(func) {
    var oldonload = window.onload;
    if (typeof window.onload != 'function') {
        window.onload = func;
    } else {
        window.onload = function() {
            if (oldonload) {
                try {
                    oldonload();
                } catch (e) {

                }
            }
            func();
        }
    }
}