function LocationChange(obj) {
	var div = document.getElementById("location"+obj.value)
	
	if(div != null) {
		// hide other location div's
		for(var i=0;;i++) {
			var div2 = document.getElementById("location"+i)
			if(div2 != null)
				div2.style.display = "none"
			else
				break
		}
		div.style.display = ""
	}
}