function showimg1(){
document.winerymap.src = "img/winery_spring.jpg";
document.budou.src = "img/wine_001.jpg";
}

function showimg2(){
document.winerymap.src = "img/winery_summer.jpg";
document.budou.src = "img/wine_002.jpg";
}

function showimg3(){
document.winerymap.src = "img/winery_autumn.jpg";
document.budou.src = "img/wine_003.jpg";
}

function showimg4(){
document.winerymap.src = "img/winery_winter.jpg";
document.budou.src = "img/wine_004.jpg";
}