how to fire javascript on view-model end ?

<zscript><![CDATA[
		void loginCheck () {
			if ((name.getValue().equals("zk") && pwd.getValue().equals("zk"))) {
				mesg.setValue("OK");
				Clients.evalJavaScript("zk.Widget.$('$loginWin').setMinimized(true)");
				initBtn.getParent().appendChild(new Label("Login Success !! Welcome to ZK Demo!"));
			} else {
				mesg.setValue("User Name or Password Invalid!");
				Clients.evalJavaScript("loginFaild()");
			}; 
		}
		]]></zscript>