function externalLinks() { 
    if (!document.getElementsByTagName) return; 
    var anchors = document.getElementsByTagName("a"); 
    for (var i=0; i<anchors.length; i++) { 
        var anchor = anchors[i]; 
        if (anchor.getAttribute("href") && 
            anchor.getAttribute("rel") == "external") {
            anchor.target = "_blank"; 
        }
    }
}

function navRoll(obj, state)
{
    var image;
    if(!state)
    {
        image="images/fade25gray.gif"
    }
    else
    {
        image="images/fade25white.gif"
    }
    obj.style.backgroundImage = "url(" + image + ")";
}

function link(obj)
{
    window.location = obj.id + ".htm";
}