function whichLink( )
{
    if(document.layers)  //ns4 condition
    {
        return document.links[15].href;
    }
    tableelement = document.getElementById("item1");
    thelink = tableelement.getElementsByTagName("a").item(0).href;
    return thelink;
}

function whichLink2( )
{
    if(document.layers)  //ns4 condition
    {
        return document.links[17].href;
    }
    tableelement = document.getElementById("item2");
    thelink = tableelement.getElementsByTagName("a").item(0).href;
    return thelink;
}

function whichLink3( )
{
    if(document.layers)  //ns4 condition
    {
        return document.links[19].href;
    }
    tableelement = document.getElementById("item3");
    thelink = tableelement.getElementsByTagName("a").item(0).href;
    return thelink;
}