Not work properly

I’ve installed this plugin on my website, http://www.columnsserie.com/contatti

I’ve the search widget at the right bottom of each page. When i type any word in the search box, the plugin auto highlight first result, but if i move the mouse on other results, they are not highlights, the results background it’s always white and the text switch to white, and desappears.

I’ve tryied to change che css but without results 🙁

http://wordpress.org/plugins/fb-autocomplete-with-post-image/