Single tap to trigger a hover effect on touchscreens

Hi,

This plugin works really well on desktops, but we found a small issue on touchscreen devices:

If the parent menu is linked to a page, a single tap will open that page. It does not allow you to select a child page from the drop-down. Is there any way (CSS code or something) that allows the drop-down menu to show with a single click?

Any help will be gratefully appreciated.

Many thanks in advance.

Taz.