function swapDisplay(a, b) {
			var tmp = document.getElementById(a).style.display;
			document.getElementById(a).style.display = document.getElementById(b).style.display;
			document.getElementById(b).style.display = tmp;
	}

	function submitFormTriggeringCallback(formName, callbackKey) {
		var ele = document.createElement("input");
		ele.type = "hidden";
		ele.name = callbackKey;
		document.forms[formName].appendChild(ele);
		document.forms[formName].submit();
	}