function buttonK1(){
document.getElementById('koja')
.setAttribute('src','index/koja2.gif');
}
function buttonoutK1(){
document.getElementById('koja')
.setAttribute('src','index/koja1.gif');
}
function buttonS1(){
document.getElementById('sizen')
.setAttribute('src','index/sizen2.gif');
}
function buttonoutS1(){
document.getElementById('sizen')
.setAttribute('src','index/sizen.gif');
}