function AjaxMailForm(script)
{
	this._script = script;
	this._form = null;
	this._params = null;
	this._session = '';
	this._callback = null;
}

AjaxMailForm.prototype = {
	send: function (form, subject, template, callback) {
		this._callback = callback;
		this._form = document[form];
		this._successed = false;

		if (!this._script) {
			alert('送信スクリプトが指定されていません！');
			return;

		} else if (!this._form) {
			alert('送信フォームが指定されていません！');
			return;

		} else if (!template) {
			template = 'default';
		}

		this._params = 'subject=' + encodeURI(subject);
		this._params += '&template=' + encodeURI(template);
		this._submit('mode=1', '_send');
	},

	_send: function (data) {
		data = eval("(" + data + ")");

		if (data.result < 1) {
			alert(data.message);
			return;
		}

		var names = this._validate();
		var formValue;
		var addedCheckboxes = new Array();
		var addedArrayForms = new Array();
		var _self = this;

		for (var i = 0; names.length > i; i++) {
			switch ($(this._form[names[i]]).attr('type')) {
				case 'radio':
					formValue = $("input[name=" + names[i] + "]:checked").val();

					if (formValue != undefined) {
						this._params += '&' + encodeURI(names[i]) + '=' + encodeURI(formValue);
					} else {
						this._params += '&' + encodeURI(names[i]) + '=';
					}

					break;
				case 'checkbox':
					if (!addedCheckboxes[names[i]]) {
						formValue = $('input[name=' + names[i] + ']:checked');

						if (formValue.size() > 0) {
							formValue.each(function() {a
								_self._params += '&' + encodeURI(names[i]) + '=' + encodeURI($(this).val());
							});
						}
					}
					addedCheckboxes[names[i]] = 1;
					break;
				case 'select':
					formValue = $("select[name=" + names[i] + "] option:selected").val();

					if (formValue != undefined) {
						this._params += '&' + encodeURI(names[i]) + '=' + encodeURI(formValue);
					} else {
						this._params += '&' + encodeURI(names[i]) + '=';
					}

					break;
				default:
					if (this._form[names[i]].value != undefined) {
						this._params += '&' + encodeURI(names[i]) + '=' + encodeURI(this._form[names[i]].value);
						
					} else if (!addedArrayForms[names[i]] && this._form[names[i]].length) {
						for (var j = 0; this._form[names[i]].length > j; j++) {
							this._params += '&' + encodeURI(names[i]) + '=' + encodeURI(this._form[names[i]][j].value);
						}
						
						addedArrayForms[names[i]] = true;
					}
			}
		}

		this._submit(this._params + '&mode=2&session_key=' + data.session_key, '_confirm');
	},

	_validate: function () {
		var names = new Array();

		for (var i = 0; this._form.elements.length > i; i++) {
			if (this._form.elements[i].name.search(/^s_[a-z]*_?(.*)$/i) != -1) {
				names.push(this._form.elements[i].name);
			}
		}

		return names;
	},

	_confirm: function (data) {
		data = eval("(" + data + ")");

		if (data.result < 1) {
			alert(data.message);
			return;
		}

		if (confirm(data.confirm)) {
			this._submit(this._params + '&mode=3&session_key=' + data.session_key, '_success');
		}
	},

	_success: function (data) {
		data = eval("(" + data + ")");

		if (data.result < 1) {
			alert(data.message);
			return;
		}

		alert('メール送信が完了しました。');

		for (var i = 0; i < this._form.length; i++) {
			if (this._form[i].name.search(/^s[a-z]?_(.*)$/i) != -1) {
				switch ($(this._form[i]).attr('type')) {
					case 'radio':
					case 'checkbox':
						this._form[i].checked = false;
						break;
					case 'select':
						this._form[i].selected = false;
						break;
					default:
						this._form[i].value = '';
				}
			}
		}

		if (typeof(this._callback) == 'function') {
			this._callback();
		}
	},

	_error: function (data) {
		alert('サーバーとの通信に失敗しました！\nお手数ですが、管理者に連絡して下さい。');
	},

	_submit: function (params, callback) {
		var self = this;

		$.ajax({
			type: "POST",
			url: this._script,
			data: params,
			timeout: 3000,
			success: function (data, status) {self[callback](data, status);},
			error: function (data, status) {self['_error'](data, status);}
		});
	}
}

function ajaxMail(script, form, subject, template, callback) {
	var ajaxMailObj = new AjaxMailForm(script);
	ajaxMailObj.send(form, subject, template, callback);
}