/* AJAX for checking username */

function getRequestObject() {
	if (window.ActiveXObject)
		return(new ActiveXObject("Microsoft.XMLHTTP"));
	else if (window.XMLHttpRequest)
		return(new XMLHttpRequest());
	else
		return(null);
}

function sendRequest_chkLogin() {
	var name = document.getElementById("txtusername").value;
	if(name != "") {
	var data = "username="+name;
	request = getRequestObject();
	request.onreadystatechange = handleResponse;
	request.open("POST", "checkLogin.asp", true);
	request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	request.setRequestHeader("Connection", "close");
	request.send(data);
	}
}

function sendRequest_Membership() {
	var memType = document.getElementById("type").value;
	if(memType == "Multiple") {
	var data = "option="+memType;
	request = getRequestObject();
	request.onreadystatechange = handleResponse;
	request.open("POST", "updateMembership.asp", true);
	request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	request.setRequestHeader("Connection", "close");
	request.send(data);
	}
}

function handleResponse() {
if ((request.readyState == 4) && (request.status == 200)) {
	if(request.responseText == "Yes") {
		document.getElementById("userChk").innerHTML = "<br/><span style='color:#0083E1;'>Username is available</span>";
		document.getElementById("isValidID").value = "valid";
	}
	else if(request.responseText == "No") {
		document.getElementById("userChk").innerHTML = "<br/><span style='color:#FF0000;'>Sorry! Username is not available</span>";
		document.getElementById("isValidID").value = "invalid";
	}
	else {
		document.getElementById("multiMember").innerHTML = request.responseText;
	}
}
}

function clearMsg(){
document.getElementById("userChk").innerHTML = "";	
}
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