function $(id) {
	return document.getElementById(id);
}
function numberTest(e) {
	var keynum = window.event ? e.keyCode : e.which
	var keychar = String.fromCharCode(keynum)
	var numcheck = /\d/
	return !keynum || keynum==8 || numcheck.test(keychar)
}

function stateEnabled(obj,states){
	if (obj.options[obj.selectedIndex].value == "us"){
		states.disabled = false;
	}
	else{
		states.disabled = true;
	}	
}