item website bugged

Simply Lol Items website needs attending/make over/fixing! When I try to use this website about items (for a build), I encounter several serious bugs.

Nr. 1 When I click "Summoner´s rift" map, ALL items dissappear

Nr. 2 When I click "Mana regen" only Guardian Orb comes up. which simply is not the only mana regen item. (this is with no map selected, thus should show all mana regen items in game)

Nr. 3 I wish I could see all Heal and shield items.

I didnt check out all the possibilities, so it´s very possible that there are many more missing items in the available categories. Plus I´d like more options to categorize items.