if (document.images) {
    stallionsup       = new Image();
    stallionsup.src   = "./images/stallions.jpg" ;
    stallionsdown     = new Image() ;
    stallionsdown.src = "./images/stallionsv.jpg" ;
	
	maresup       = new Image();
    maresup.src   = "./images/mares.jpg" ;
    maresdown     = new Image() ;
    maresdown.src = "./images/maresv.jpg" ;

    saleup       = new Image();
    saleup.src   = "./images/sale.jpg" ;
    saledown     = new Image() ;
    saledown.src = "./images/salev.jpg" ;
	
	newsup       = new Image();
    newsup.src   = "./images/news.jpg" ;
    newsdown     = new Image() ;
    newsdown.src = "./images/newsv.jpg" ;
	
	contactup       = new Image();
    contactup.src   = "./images/contact.jpg" ;
    contactdown     = new Image() ;
    contactdown.src = "./images/contactv.jpg" ;
}
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" );
    }
}