// Topnav Dropdown Script

function showLayer(layerName)  {  
	if ( document.getElementById(layerName) )
		document.getElementById(layerName).style.visibility='visible';
}

function hideLayer(layerName)  {  
	if ( document.getElementById(layerName) )
		document.getElementById(layerName).style.visibility='hidden';
}

function addBookmark(title, url) {
    if (window.sidebar) { // firefox
    	window.sidebar.addPanel(title, url, "");
    } else if(document.all && window.external) { //MSIE
    	window.external.AddFavorite(url, title);
    } else {
    	alert("Sorry, your browser doesn't support this");
    }
}