Help with Menu

[ianzzz5]

Hi all,

I have added a new button to my menu on my desktop site (swallowdale-brundall dot co dot uk) because some customers complained that my website does not show availability although it shows it if you click on 'book now'. The new button 'availability' points to the same page as 'book now'. The problem is when you select either the 'availability' or 'book now' button both of them are highlighted. Is there anyway I can change the button so only the button selected is highlighted.

Thanks.