function init(){
	mailEntryWatcher = new mailEntryWatcher('submit'); 
}

mailEntryWatcher = Class.create();
mailEntryWatcher.prototype = {
	initialize: function(button)
	{
		this.button = $(button);
		this.button.onclick = this.mailEntry.bindAsEventListener(this);
	},
	mailEntry: function(evt)
	{
		var rdemail = $('rdemail').value;
		var magid   = $('magid').value;
		if(rdemail == ''){
			alert('メールアドレスを入力してください。');
			return false;
		}
		url = 'http://regist.mag2.com/reader/Magrdop?rdemail=' + rdemail + '&magid=' + magid + '&op=reg';
		window.open(url, 'mywindow2', 'width=700, height=500, menubar=no, toolbar=no, scrollbars=yes');
	}
}