var visibleVar="null";

    /*
    function init(){
        if (navigator.appName == "Netscape") {
                layerStyleRef="layer.";
                layerRef="document.layers";
                styleSwitch="";
                visibleVar="show";
        }else{
                layerStyleRef="layer.style.";
                layerRef="document.all";
                styleSwitch=".style";
                visibleVar="visible";
        }
    }
    */

    function init()
    {
                layerStyleRef="layer.style.";
                layerRef="document.all";
                styleSwitch=".style";
                visibleVar="visible";
    }

    function showLayer(layerName){
        eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
    }

    function hideLayer(layerName){
        eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
    }