You are using 2 or more menus on the web page and submenus are behind the lower bar.
SOLUTION
Use the following code for the top and the bottom menus:
<div style="position: relative; z-index: +1;"> <script language="javascript" src="s1073a.js"></script> </div> <div style="position: relative;"> <script language="javascript" src="s1073b.js"></script> </div>Use z-index positive value to put objects in front, use negative values to send items to back.
UNIQUE MENU ID
If you use 2 or more menus make sure both menus have unique ID. Set menu id with "Menu" > "Menu ID" command. For example you can use numbers 1 and 2 respectively. Then re-export your JS files: