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window.onload = initPage;
function initPage() {
document.getElementById("username").onblur = checkUsername;
document.getElementById("register").disabled = true;
}
function checkUsername() {
document.getElementById("username").className = "thinking";
request = createRequest();
if (request == null)
alert("Unable to create request");
else {
var theName = document.getElementById("username").value;
var username = escape(theName);
var url= "submit.aspx?username=" + username;
request.onreadystatechange = showUsernameStatus;
request.open("GET", url, true);
request.send(null);
}
}