function addEngine()
{
    if ((typeof window.sidebar == "object") && (typeof window.sidebar.addSearchEngine == "function"))
    {
        window.sidebar.addSearchEngine(
            "http://www.vortexportal.com/Scripts/Search/VortexPortalSearchPlugin.src",  /* engine URL */
            "http://www.vortexportal.com/Scripts/Search/VortexPortalSearchPlugin.gif",  /* icon URL */
            "vortexportal.com",
			"");                                              
    }
    else
    {
        alert("Firefox 1.5 or later is required to add the Vortex Portal Search Engine.");
    }
}