sfHover = function()
{
	var sfEls = document.getElementById( 'nav' ).getElementsByTagName( 'LI' );
	for( var i = 0; i < sfEls.length; i++ )
	{
		sfEls[i].onmouseover = function()
		{
			this.className += ' sfhover';
		}
		sfEls[i].onmouseout = function()
		{
			this.className=this.className.replace( new RegExp( " sfhover\\b"), '' );
		}
	}
}
if( window.attachEvent ) window.attachEvent( 'onload', sfHover );