var images = new Array ("ProductOverview", "Web", "Portal",  "KnowledgeBase", "Samples", "VisualStudio2003");
var imgSrc = new Array ("product_overview", "web", "portal", "knowledge_base", "samples", "vs2003");
var newtab;
function tabObject(objIndex)
{
    this.id = images[objIndex];
    this.src = "/Portals/0/" + imgSrc[objIndex] + ".gif";
    this.mouseOver = "/Portals/0/" + imgSrc[objIndex] + "_h.gif";
    this.mouseOut = this.src;
    this.selected = "/Portals/0/" + imgSrc[objIndex] + "_s.gif";
}

var imagesArray = new Array();
imagesArray[0] = new tabObject(0);
imagesArray[1] = new tabObject(1);
imagesArray[2] = new tabObject(2);
imagesArray[3] = new tabObject(3);
imagesArray[4] = new tabObject(4);
imagesArray[5] = new tabObject(5);
imagesArray[6] = new tabObject(6);

if (location.search.indexOf("tabname") > -1)
{
    var downloadTabs = document.getElementById("downloadTabs");
    if (downloadTabs != null)
    {
    	downloadTabs.style.display = "none";
    }

    var learnTabs = document.getElementById("articleTabs");
    if (learnTabs != null)
    {
    	learnTabs.style.display = "block";
    }
    newtab = location.search.substr(location.search.indexOf("tabname") + 8);
    
    for (i = 0 ; i < images.length; i++)
    {
        var img = document.getElementById(images[i]);
        if (newtab == img.id)
        {
            img.src = imagesArray[i].selected;
        }
        else
        {
            img.src = imagesArray[i].src;
        }    
    }
}