Help! stuck on SAMSUNG screen.

Hello today i downloaded application called Anim Mod and then i installed it and then i opened the Anim Mod application and pressed Blur button then it downloaded something and then i had to boot my phone. wel i did boot but its now stuck in this samsung logo screen. my phone was rooted

i didnt know what to do so i just went to recovery mode and set it to factory settings and booted and its still stuck on this samsung logo...