Wt

How to use JQuery function in Wt using doJavaScript()

I am using a gritter notification which is a jquery plugin. Is there anything in Wt similar to this

http://boedesign.com/demos/gritter/

here is my wt code

WApplication::instance()->require("http://www.google.com/jsapi");
WApplication::instance()->require("js/jquery.min.js");
WApplication::instance()->require("js/jquery.gritter.js");
stringstream strm;
strm << "$.gritter.add({title: 'This is a regular notice!',text: 'This will fade out after a certain amount of time.',sticky: false,time: ''});";
doJavaScript(strm.str());

nothing is shown when executing this code

What I am missing??

please help