michael@0: /* vim:set ts=2 sw=2 sts=2 et cin: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: function onButtonClick() {
michael@0:   var textbox = document.getElementById("textbox");
michael@0: 
michael@0:   var contractid = (textbox.value % 2 == 0) ?
michael@0:       "@test.mozilla.org/simple-test;1?impl=js" :
michael@0:       "@test.mozilla.org/simple-test;1?impl=c++";
michael@0: 
michael@0:   var test = Components.classes[contractid].
michael@0:       createInstance(Components.interfaces.nsISimpleTest);
michael@0: 
michael@0:   textbox.value = test.add(textbox.value, 1);
michael@0: }