function reloadVcode(){
  var old_src = $('mjs_vcode').src;
  $('mjs_vcode').src = old_src.split('?')[0] + '?' + (new Date());
}

function openWindow(tourl, w_width, w_height){
  var win_name = 'new_dichan';
  window.open(
    tourl, win_name,
    "height="+w_height+", width="+w_width+", top="+(window.screen.height-w_height)/2+", left="+(window.screen.width-w_width)/2+", toolbar=no, menubar=no, scrollbars=yes, resizable=no, location=no, status=yes, fullscreen=no"
  );
}