/*************************************************
*   Decide which browser and version
*************************************************/
var DOM = (document.getElementById) ? true : false;
var NS4 = (document.layers) ? true : false;
var IE = (document.all) ? true : false;
var IE4 = IE && !DOM;

// misc vars
var activeLayer ;
var obj ;



function HideLayer()
{
    if (obj)
        obj.style.visibility = "hidden" ;
}



function SetActiveLayer(id)
{
    activeLayer = id ;
    if (DOM)
        obj = document.getElementById(activeLayer) ;
    else if (IE4)
        obj = document.all[activeLayer] ;
   // ShowLayer(id) ;
    obj.style.visibility = "visible" ;
}