window.onload = WindowLoad;

    function WindowLoad() {
        document.getElementById("selectedMenuTabIndex").value = Request("selectedMenuTabIndex", 0);       
        LoadSelectedIndex();
    }
    
    function TabClick(index) {
        document.getElementById("selectedMenuTabIndex").value = index;
        LoadSelectedIndex();
    }

    function LoadSelectedIndex() {
        var listItem = 0;
        var elements = document.getElementsByTagName("li");
        for (var i = 0; i < elements.length; i++) {
            if (elements[i].parentNode.id == "tabMenu") {
                if (listItem == document.getElementById("selectedMenuTabIndex").value) {
                    document.getElementById("Description_" + listItem).style.display = "";
                    document.getElementById("tbl_" + listItem).style.display = "";
                    document.getElementById("div_" + listItem).style.display = "";
                    elements[i].style.color = "White";
                }
                else {
                    document.getElementById("Description_" + listItem).style.display = "none";
                    document.getElementById("tbl_" + listItem).style.display = "none";
                    document.getElementById("div_" + listItem).style.display = "none";
                    elements[i].style.color = "#008AB8";
                }

                listItem++;
            }
        }
    }

    // pulls arguments from the url
    function Request(strName, strDefault) {
        try {
            var args = document.location.search.replace("?", "").split("&");

            for (var i = 0; i < args.length; i++) {
                if (args[i].substring(0, strName.length + 1) == strName + "=") {
                    return args[i].substring(strName.length + 1)
                }
            }
        } catch (ex) {
    }
    return strDefault;
    };
    
    function LoadThumbnail(fileName) {

        
        var element = document.getElementById("previewImage_" + document.getElementById("selectedMenuTabIndex").value);
        if (element != null) {
            element.setAttribute("src", fileName);
            element.style.display = "";
        }

        element = document.getElementById("previewVideo_" + document.getElementById("selectedMenuTabIndex").value);
        if (element != null)
            element.style.display = "none";
    };

    function LoadVideo(index) {

        var element = document.getElementById("previewImage_" + document.getElementById("selectedMenuTabIndex").value);
        if (element != null) 
            element.style.display = "none";
            
        element = document.getElementById("previewVideo_" + index);
        if (element != null)
           element.style.display = "";
    };