btn=new Array()
btn[0]="decor"
btn[1]="installation"
btn[2]="maintenance"
btn[3]="outdoor"
btn[4]="repair"
btn[5]="remodeling"

function hideAllExcept(elm) {
for (var i = 0; i < btn.length; i++) {
var layer = document.getElementById(btn[i]);
if (elm!= btn[i]) {
layer.style.display = "none";
}
else {
layer.style.display = "block";
}
}
}