function addEngine(name,ext,cat)
{
	if ((typeof window.sidebar == "object") && (typeof
	window.sidebar.addSearchEngine == "function"))
	{
		//cat="Web";
		//cat=prompt("In what category should this engine be installed?","Web")
		window.sidebar.addSearchEngine(
		"http://yamakei.jsn.cc/ff_plugin/jsn_faq.src",
		"http://yamakei.jsn.cc/ff_plugin/jsn_faq.gif",
		name,
		cat );
	} else { errorMsg(name,ext,cat); }
}