if (document.images) {
    homebuttonup       = new Image();
    homebuttonup.src   = "http://www.moorhallhotel.co.uk/pics/layout/tab_homeinfo.gif" ;
    homebuttondown     = new Image() ;
    homebuttondown.src = "http://www.moorhallhotel.co.uk/pics/layout/tab_homeinfoOVER.gif" ;
	
	reservebuttonup       = new Image();
    reservebuttonup.src   = "http://www.moorhallhotel.co.uk/pics/layout/tab_reservation.gif" ;
    reservebuttondown     = new Image() ;
    reservebuttondown.src = "http://www.moorhallhotel.co.uk/pics/layout/tab_reservationOVER.gif" ;
	
	contactbuttonup       = new Image();
    contactbuttonup.src   = "http://www.moorhallhotel.co.uk/pics/layout/tab_contact.gif" ;
    contactbuttondown     = new Image() ;
    contactbuttondown.src = "http://www.moorhallhotel.co.uk/pics/layout/tab_contactOVER.gif" ;
	
	sitemapbuttonup       = new Image();
    sitemapbuttonup.src   = "http://www.moorhallhotel.co.uk/pics/layout/tab_sitemap.gif" ;
    sitemapbuttondown     = new Image() ;
    sitemapbuttondown.src = "http://www.moorhallhotel.co.uk/pics/layout/tab_sitemapOVER.gif" ;

}
function buttondown( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "down.src" );
    }
}
function buttonup ( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "up.src" );
    }
}