function addSearchPlugin()
{

    var elem = document.getElementById("schoolname");
    var schoolname = elem.value;

    var name = schoolname.toLowerCase();

    if ((typeof window.sidebar == "object") && (typeof window.sidebar.addSearchEngine == "function"))
    {
        window.sidebar.addSearchEngine(
            "http://www.cs.stevens.edu/~dlong/hacks/facebook/fbsgen.php/facebook_" + name + ".src",
            "http://www.cs.stevens.edu/~dlong/hacks/facebook/fbsgen.php/facebook_" + name + ".gif",
            "Facebook - " + name,
            "Directory"
        );

    } else {
        alert("I am error.");
    }
}