I'm using the Pro verision.
The html page uses a table and is centered.
Unfortunately the menu is good for my monitor and browser but changes on another monitor and is shifted or if I change the display resolution lets say from 1024x768 to 800x600
How do I rectify this.
if the content of your page is centered then use 'align' feature of the menu (in menu_tpl.js). See the demo included in the distribution package.