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    var timerID        = null;

    var userAgent      = navigator.userAgent.toLowerCase();
    var isW3C          = false;
    var isNS4          = false;
    var isIE           = false;

    var layerRef       = "";
    var styleSwitch    = "";
    var leftBracket    = '';
    var rightBracket   = '';

    var activeName     = "";
    var activeFrame    = "";

    if (document.documentElement)
    {
        isW3C = true;

        layerRef     = "document.getElementById";
	    styleSwitch  = ".style";
	    leftBracket  = '(';
	    rightBracket = ')';
    }
    else
    if (parent.document.layers)
    {
        isNS4 = true;

        layerRef     ="document.layers";
	    styleSwitch  = "";
	    leftBracket  = '[';
	    rightBracket = ']';
    }
    else
    if (document.all)
    {
        isIE = true; isW3C = false;

        layerRef     = "document.all";
	    styleSwitch  = ".style";
	    leftBracket  = '[';
	    rightBracket = ']';
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    function setLayerVisibility(inFrame, layerName, layerVisibility)
    {
        eval((inFrame != "" ? inFrame + '.' : '') + layerRef + leftBracket + '"' + layerName + '"' + rightBracket + styleSwitch + '.visibility = "' + layerVisibility + '"');
    }

    function showLayer(inFrame, layerName)
    {
        /*
        if (activeName != "")
        {
            hideLayer(activeFrame, activeName, 0);
            timerID = 0;
            activeName = "";
            activeFrame = "";
        }
        */
        setLayerVisibility(inFrame, layerName, "visible");
        //activeName  = layerName;
        //activeFrame = inFrame;
    }

    function hideLayer(inFrame, layerName, seconds)
    {
        timerID = setTimeout("setLayerVisibility(\"" + inFrame + "\", \"" + layerName + "\", \"hidden\")", seconds);
    }
//-->