<!--StartFragment -->
function addEngine()
{
    if ((typeof window.sidebar == "object") && (typeof window.sidebar.addSearchEngine == "function"))
    {
        window.sidebar.addSearchEngine(
            "http://www.nejm.org/search/nejmsearch.src",  /* engine URL */
            "http://www.nejm.org/search/nejmsearch.png",  /* icon URL */
            "nejmsearch",                                                /* engine name */
            "Web" );                                                     /* category name */
    }
    else
    {
        alert("Mozilla M15 or later is required to add a search engine.");
    }
}