function withShoes(id_article){
    var btn1= document.getElementById('photo'+id_article);
    btn1.className = "display";
    var btn2= document.getElementById('photowithout'+id_article);
    btn2.className = "displaynone";
    var btn3= document.getElementById('priceAC'+id_article);
    btn3.className = "display";
    var btn4= document.getElementById('priceSC'+id_article);
    btn4.className = "displaynone";
}

function withoutShoes(id_article){
    var btn1= document.getElementById('photo'+id_article);
    btn1.className = "displaynone";
    var btn2= document.getElementById('photowithout'+id_article);
    btn2.className = "display";
    var btn3= document.getElementById('priceAC'+id_article);
    btn3.className = "displaynone";
    var btn4= document.getElementById('priceSC'+id_article);
    btn4.className = "display";
}