var IE = (document.all && !document.getElementById) ? true : false;
var NS4 = (document.layer) ? true : false;
var DOM = (document.getElementById) ? true : false;

function GetObject(src) {
	var strObj;
	if ( IE ) {
		strObj = "document.all." + src;
	} else if ( NS4 ) {
		strObj = "document.layers." + src;
	} else if ( DOM ) {
		strObj = "document.getElementById('" + src + "')";
	}
	
	return eval(strObj);
}

function ShowNode(src) {
	var obj = GetObject(src);
	obj.style.display = "block";
}

function HideNode(src) {
	var obj = GetObject(src);
	obj.style.display = "none";	
}

//Gets the browser specific XmlHttpRequest Object
function getXmlHttpRequestObject() {
	var httpRequest;
	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
		httpRequest = new XMLHttpRequest();
		if (httpRequest.overrideMimeType) {
			httpRequest.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	return httpRequest;
}

function Listen() {
	var obj = document.getElementById("voiceCaptcha");
	obj.innerHTML = "<iframe src=\"/common/captcha/voicecaptcha.php\" frameborder=\"0\" height=\"1\" width=\"1\" scrolling=\"no\"></iframe>";
}