function addBookmark(title,url) {
if (window.sidebar) { 
window.sidebar.addPanel(title, url,""); 
} else if( document.all ) {
window.external.AddFavorite( url, title);
} else if( window.opera && window.print ) {
return true;
}
}

function hideSubMenus() {
	document.getElementById('divBooks').style.display = "none";
	document.getElementById('divArticles').style.display = "none";
	document.getElementById('divSeminars').style.display = "none";
	document.getElementById('divWebsites').style.display = "none";
}

function showSubMenu(divName) {
	document.getElementById('divBooks').style.display = "none";
	document.getElementById('divArticles').style.display = "none";
	document.getElementById('divSeminars').style.display = "none";
	document.getElementById('divWebsites').style.display = "none";
	document.getElementById(divName).style.display = "block";
}