How can I create a side menu from some menu subItems in the same page?

I have a horizontal menu, some of the Items have expandable subItems开发者_开发问答 and all this is built with scripts that I do not have access to, I can only add and remove items through the dashboard and style and interact with the html templates (BigCommerce). I would like to reuse one of this menu Items and it's subItems as an additional side navigation. Is there the possibility to do this with only javascript? When I explore the Menu with firebug the output has a similar scheme to this,

<div class="menu">
 <ul>
  <li class="">Item1</li>
  <li class="hasSubMenu">Item2</li> 
   <ul>
    <li>SubItem1</li>
    <li>SubItem2</li>
    <li>SubItem3</li>
  </ul>
  <li class="">Item1</li>
  <li class="hasSubMenu">Item2</li>
 </ul>
</div>

Thanks for any help.

As far I am concerned, you can edit the CSS and add custom templates on BC. If I got your point, the menu you have there is for the categories, right? To re-use it on the left navigation, you will need to go to the Design > Template Files > Default.html and find %%Panel.SideCategoryList%%. It will depend how you have your template layout, but it should be there. Once you find that Panel, go to your left navigation [make sure you have one] and add %%Panel.SideCategoryList%% there as well. You don't need to do nothing else. BC will adjust it automatically for you.

As you mentioned, you cannot interact will all the scripts, but you can "bypass" them, at least a good 79% of them.

Hope it solved your question.

Ps: I could not put it as a comment, so I am sorry if it is not what you are looking for, but let me know and I will do my best to rectify my answer.