var Register = function() {
	// Members.
	
	this.HttpRequest = null;
	this.Username = function(__Parent) {
		// Members.
		
		this.Parent = __Parent;
		this.Element = document.getElementById("Page-Username");
		
		// Methods.
		
		this.GetValue = function() {
			return this.Element.value;
		};
		this.Validate = function() {
			if(this.Element.value.match(/^[a-z][a-z0-9_]{3,15}$/i) == null) {
				alert("Invalid username!\nMust start with a character from a-z.\nMust be 4-16 characters.\nMay only consist of the characters a-z, 0-9 and underscore.");
				return false;
			}
			
			return true;
		};
	};
	this.Username = new this.Username(this);
	this.Password = function(__Parent) {
		// Members.
		
		this.Parent = __Parent;
		this.Element = document.getElementById("Page-Password");
		
		// Methods.
		
		this.GetValue = function() {
			return this.Element.value;
		};
		this.Validate = function() {
			if(this.Element.value.match(/^.{8,32}$/) == null) {
				alert("Invalid password!\nMust be 8-32 characters.");
				return false;
			}
			
			return true;
		};
	};
	this.Password = new this.Password(this);
	this.EmailAddress = function(__Parent) {
		// Members.
		
		this.Parent = __Parent;
		this.Element = document.getElementById("Page-EmailAddress");
		
		// Methods.
		
		this.GetValue = function() {
			return this.Element.value;
		};
		this.Validate = function() {
			if(this.Element.value.match(/^[a-z0-9._-]+@[a-z0-9._-]+.[a-z]$/i) == null) {
				alert("Invalid e-mailaddress!\nPlease write a correct e-mailaddress.\nIf the e-mailadress is correct, please contact an administrator.");
				return false;
			}
			
			return true;
		};
	};
	this.EmailAddress = new this.EmailAddress(this);
	this.Captcha = function(__Parent) {
		// Members.
		
		this.Parent = __Parent;
		this.Element = document.getElementById("Page-Captcha");
		this.Image = document.getElementById("Page-Captcha-Image");
		
		// Methods.
		
		this.GetValue = function() {
			return this.Element.value;
		};
		this.UpdateImage = function() {
			this.Image.src = "/!images/captcha.php?Random=" + Math.random();
		};
		this.Validate = function() {
			if(this.Element.value.match(/^[A-Z0-9]{6}$/) == null) {
				alert("Invalid captcha!\nMust be 6 uppercase characters and numbers.");
				return false;
			}
			
			return true;
		};
	};
	this.Captcha = new this.Captcha(this);
	
	// Methods.
	
	this.Validate = function() {
		if(!this.Username.Validate()) {
			return false;
		}
		
		if(!this.Password.Validate()) {
			return false;
		}
		
		if(!this.EmailAddress.Validate()) {
			return false;
		}
		
		if(!this.Captcha.Validate()) {
			return false;
		}
		
		return true;
	};
	this.OnSubmit = function() {
		if(this.HttpRequest == null) {
			if(!this.Validate()) {
				return;
			}
			
			this.HttpRequest = JavaScript.HttpRequest.Create();
			this.HttpRequest.onreadystatechange = function() { Register.OnSubmit() };
			this.HttpRequest.open("POST", "register.php", true);
			this.HttpRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=iso-8859-1");
			this.HttpRequest.send("Username=" + JavaScript.UrlEncode(this.Username.GetValue()) + "&Password=" + JavaScript.UrlEncode(this.Password.GetValue()) + "&EmailAddress=" + JavaScript.UrlEncode(this.EmailAddress.GetValue()) + "&Captcha=" + JavaScript.UrlEncode(this.Captcha.GetValue()));
		} else {
			if(this.HttpRequest.readyState == 4) {
				if(this.HttpRequest.responseText == "OK") {
					window.location.href = "success/";
				} else {
					alert(this.HttpRequest.responseText);
					
					this.Captcha.UpdateImage();
				}
				
				this.HttpRequest = null;
			}
		}
	};
};