Change hover effect gallery images

Thanks for your question and the link to your test page; very helpful.

The “at the bottom left the url with the parent-page-id is shown.” behavior comes from the browser and I do not know any way to change it. You should be able to add a “title” attribute to display additional information on hover. Here is the relevant entry from the “Gallery Display Content” section of the Settings/Media Library Assistant Documentation tab:

mla_rollover_text – adds the HTML “title” attribute in the hyperlink for each gallery item. This is the attachment title text displayed when the mouse rolls or hovers over the gallery thumbnail. Note that as of WordPress 3.7 there is no default “title” attribute; for older WordPress versions this parameter will replace the default “title”.

You can try something like:

mla_rollover_text="{+parent_title+}"

or whatever you want to display.

I am marking this topic resolved, but please update it if you have any problems or further questions regarding the above suggestion. Thanks for your continued interest in the plugin.