Open a SharePoint 2010 screen as modal dialog wherever you want via jQuery

My coworker at Belfius just found this cool trick to make your input screens cooler.
He pointed me to the blog of Tobias Lekman:
You can use the SP.UI.ModalDialog namespace via javascript. What his code does is open a SharePoint 2010 screen as modal dialog:

The code

function test() {
        SP.UI.ModalDialog.showModalDialog({
                url: "http://yoursitecollection/yoursite//Lists/listname/NewForm.aspx",
                title: "Add item",
                allowMaximize: true,
                showClose: true,
                width: 800,
                height: 600,
                dialogReturnValueCallback: silentCallback
      });
};
function silentCallback(dialogResult, returnValue) {
}
function refreshCallback(dialogResult, returnValue) {
SP.UI.ModalDialog.RefreshPage(SP.UI.DialogResult.OK);
}

Simply point the url to the page you want to show.