function send_mail() {
  var params = $('form_mail_form').serialize(true);
  new Ajax.Updater('form_mail_widget', '/form_mail/send',
    {
      method:'post',
      onSuccess:new Effect.Fade('form_mail_widget', {duration:10}),
      asynchronous:true,
      parameters:params
    });
}

function draw_form_mail_widget(greeting, pretty_name, to, domain, fwidth, width, height, custom_style) {
  custom_style = escape(custom_style);
  to = escape(to);
  document.write("<div id=\"form_mail_widget\"><iframe src=\"http://castr.appspot.com/form_mail?greeting=" + greeting + "&width=" + fwidth + "&pretty_name=" + pretty_name + "&to=" + to + "&domain=" + domain + "&custom_style=" + custom_style + "\" frameborder=\"0\" scrolling=\"no\" width=\"" + width + "\" height=\"" + height + "\"></iframe></div>");
}