Marketplace not displaying anything after i did this.

[900580_1452550659]

What i do :
1. Go to sell page.

2. Selling an item.

3. Pressed "Ok" 2 times fast (my left mouse click always double clicked). And wait until a pop up message appear to confirm.
4. Then choose Cancel/No.

5. Then i got this blank marketplace...

solution? i already did resetting things in Internet Options and restarted the PC ( and yes it works, but when i did this again, it will not displaying again. )

 

sorry for my bad english.

i hope someone can help...

*Edited : Not only marketplace, also F1/F2 not showing.