if ($('navigation-big-bar'))
{
	$('navigation-big-bar').select('a').each(function(item)
	{
		if (item.hasClassName('main-link'))
		{
			var c = item.childElements();
			var f = item.ancestors();

			c[0].onmouseover = function ()
			{
				item.setStyle({textDecoration : 'underline'});
				$('navigation-big-bar').select('li').each(function(item2){item2.removeClassName('item-active');});
				f[0].addClassName('item-active');
				return false;
			};
			c[0].onmouseout = function ()
			{
				item.setStyle({textDecoration : 'none'});
			};		
		}
	});
}