$(document).ready(function(){
    var $loader = $("#loader");
    var $group_alert = $("#group_alert");
    var wrapper = document.getElementById("wrapper");
    
    $loader.css({"left":wrapper.clientWidth/2});
    $loader.css({"top":wrapper.clientHeight/2});
/*
    $group_alert.css({"left":wrapper.clientWidth/2-100});
    $group_alert.css({"top":wrapper.clientHeight/2});

    $group_alert.css({"display":"block"});
    $group_alert.fadeOut(1500);
*/

    $("a").click(function(){
        $loader.css({"display":"block"});
        return true;
    });
});