ieHover = function() 
{
	var ieEls = document.getElementById('top-nav').getElementsByTagName('div');
	for (var i=0; i<ieEls.length; i++) 
	{
		ieEls[i].onmouseover=function() 
		{
			this.className += ' iehover'
		}

		ieEls[i].onmouseout=function() 
		{
			this.className=this.className.replace(new RegExp(' iehover\\b'), '')
		}
	}
}

if (window.attachEvent) window.attachEvent('onload', ieHover)