-1
Good question, Henrik.
To consider the JavaScript disabled users, for the current version of the accordion menu (v2013.3.18), you should remove the following two settings from the accordionmenu.css file:
#acdnmenuDemo
{
font-size:0;
}
#acdnmenuDemo>ul{visibility: hidden;}
We are planning to make this change in its next release so that it will be friendly to JavaScript disabled users.
Note: For the current accordion menu(v2013.3.18), some of its templates may not have the #acdnmenuDemo { font-size:0;} settings.