Hello,
Thank you for submitting your query with ComponentArt forum.
It seems that you want to expand the submenu item only on the mouse hover of the image of menu which is displayed along with text.
I would like to tell you that this functionality may not be achieved because at present there is no intrinsic functionality available using which we can differentiate the element (text or image) being mouse hovered for a menu item.
I apologize for the inconvenience this may cause to you.
Thank you.
Harish Malhotra