var xdModuleManagerObj = {
    init: function() {
        this.proxy = new xdModuleManager(this);
    },
    testAjax: function(result) {
        alert("result: " + result);
    }
}

var xdModuleManagerOnLoad = window.onload;
window.onload = function() {
    if(xdModuleManagerOnLoad) xdModuleManagerOnLoad();
    xdModuleManagerObj.init();
}