function loadswf(videoname) {
    if (videoname != '') {
        var flashvars = {};
        var params = {};
        var attributes = {};
        swfobject.embedSWF("video/" + videoname, "flashcontent1", "430", "240", "9.0.0", "expressInstall.swf", flashvars, params, attributes);
    }
    else {
        var swf = document.getElementById("flashcontent1");
        swf.style.visibility = "hidden";
    }
}