How to use the catalog.gxe.dialog.loadTitle function in catalog

var handleError = function (sError) {
            oWorking.hide();
            oThis._showErrorDialog(this.i18n["catalog.gxe.dialog.loadTitle"], sWorkingMsg, sError);
        };

_showLoadDialog: function () {
        var bEnabled = true;

        var oThis = this;
        var oWorking = null;
        var sWorkingMsg = null;
        var elDialogContent = document.createElement("div");
        var oDialog = new dijit.Dialog({
            title: this.i18n["catalog.gxe.dialog.loadTitle"],
            content: elDialogContent
        });
        dojo.connect(oDialog, "onHide", dojo.hitch(this, function () {
            setTimeout(dojo.hitch(this, function () {
                oDialog.destroyRecursive();
            }), 300);
        }));


        var elOffScreen = document.createElement("span");
        dojo.addClass(elOffScreen, "dijitOffScreen");
        elDialogContent.appendChild(elOffScreen);

        var elCriteria = document.createElement("div");
        elCriteria.className = "gxePopupPanel";
        elDialogContent.appendChild(elCriteria);