mt=new Array()
mt[0]="one-bedroom"
mt[1]="two-bedroom"
mt[2]="three-bedroom"
mt[3]="four-bedroom"
mt[4]="villa"

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