function toggleLayer(whichLayer, moreText, lessText)
{
        if (document.getElementById)
        {
		var layerToToggle = document.getElementById(whichLayer);
                var style2 = layerToToggle.style;
                if (style2.display == "none"){
                        style2.display = "block";
                        var moreLessSpanId = layerToToggle.id + "_moreless";
                        var moreLessSpan = document.getElementById(moreLessSpanId);
                        var firstChild = moreLessSpan.firstChild;
                        moreLessSpan.removeChild(firstChild);
                        var lessTextNode = document.createTextNode(lessText);
                        moreLessSpan.appendChild(lessTextNode);
                        //moreLessSpan.innerHTML = "less";
                        return;
                }
                if (style2.display == "block"){
                        style2.display = "none";
                        var moreLessSpanId = layerToToggle.id + "_moreless";
                        var moreLessSpan = document.getElementById(moreLessSpanId);
                        var firstChild = moreLessSpan.firstChild;
                        moreLessSpan.removeChild(firstChild);
                        var moreTextNode = document.createTextNode(moreText);
                        moreLessSpan.appendChild(moreTextNode);
                        //moreLessSpan.innerHTML = "more";
                        return;
                }
                //style2.display = style2.display? "block":"none";
	}
}