Card sliding when beign on display

Does anyone have the solution for preventing cards on display from falling after a few days. The card is sometimes A6; 6X6; 4X4; 6X6; A5 (landscape and portrait ) the weight of cards varies from 240-350 gsm.The cards stand fine, but then slowly bags and then fall down.Any suggestion would be grateful.Thanks in advance.

What I do is to fold the back 1-2 cms down from the fold and glue that top section - like this;

http://www.cardmakingparadise.com/bambi_prevention.jpg

That stops the cards doing a 'Bambi' - I do it to cards I send, and to cards I receive too if they start to splat. :)

Thanks Sara for your tip.I shall try it.:thanks:

Great tip, I have the same problem, they stand great when first made then gradually start to fall. Does this prevent the Bambi 100%?

Well it has done so far! :)

Thanks Sara I'll see how I get on

Will have to try this as an alternative to what I do now.
Just cut off a sliver of the bottom edge on the back of the card.
This also stops a card falling over if the front is heavier than the back.