function addEngine(name,ext,cat)
{
	if ((typeof window.sidebar == "object") 
		&& (typeof  window.sidebar.addSearchEngine == "function"))
	{
		window.sidebar.addSearchEngine("http://www.wowguru.com/" + name + ".src",
			"http://www.wowguru.com/" + name + "." + ext,
			name, cat );
	}
	else
	{
		//you could put an error handler here
		;
	}
}