isNS4 = (document.layers) ? true : false;
isIE4 = (document.all && !document.getElementById) ? true : false;
isIE5 = (document.all && document.getElementById) ? true : false;
isNS6 = (!document.all && document.getElementById) ? true : false;

function getObj(m)
{
    if (isNS4){
        elm = document.layers[m];
    }
    else if (isIE4){
        elm = document.all[m];
    }
    else if (isIE5 || isNS6){
        elm = document.getElementById(m);
    }
    return elm;
}


/************************
** Image rollover
************************/
//Rollover globals
aCloseLink = new Array;

function loadCloseOver()
{
    aCloseLink[0] = new Image;
    aCloseLink[0].src = 'images/close_link_idle.jpg';
    aCloseLink[1] = new Image;
    aCloseLink[1].src = 'images/close_link_over.jpg';
    aCloseLink[2] = new Image;
    aCloseLink[2].src = 'images/close_link_down.jpg';
}

function changeCloseNav(iPos)
{
    //iPos - 0=idle, 1=over, 2=down
    getObj('closeimagelink').src = aCloseLink[iPos].src;
}