SharePoint 2013 JQuery Asset Picket

var b = new AssetPickerConfig("");
    b.ClientID = "";
    b.DefaultAssetLocation = "";
    b.DefaultAssetImageLocation = "";
    b.CurrentWebBaseUrl = "";
    b.AllowExternalUrls = "";
    b.ManageHyperlink = false;
    b.AssetUrlClientID = "";
    b.ReturnCallback = function(f, e, d, b) {
       alert();
    };
    var h = new ImageAsset("");
h.LaunchModalAssetPicker(b)