var currentEnabled = null;
function enableElement(elem) {
	if (currentEnabled) {
 		currentEnabled.disabled = true;
 	}
 	elem.disabled = false;
 	currentEnabled = elem;
}

function updateradio() {
	var pt = document.getElementById("beezo_criteria").value;
	if (pt == 1) {
		document.getElementById("beezo_djname").disabled = false;
		document.getElementById("beezo_djgenre").disabled = true;
		document.getElementById("beezo_djcity").disabled = true;
	} else if (pt == 2) {
		document.getElementById("beezo_djname").disabled = true;
		document.getElementById("beezo_djgenre").disabled = false;
		document.getElementById("beezo_djcity").disabled = true;
	} else {			
		document.getElementById("beezo_djname").disabled = true;
		document.getElementById("beezo_djgenre").disabled = true;
		document.getElementById("beezo_djcity").disabled = false;
	}
}