function toggle_visibility(id) {
var e = document.getElementById(id);
if(e.style.display == 'none')
e.style.display = 'block';
else
e.style.display = 'none';
}

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;
	}
}