Things which render the Salaah Makrooh

Q: Does the salaah become makruh if during praying people at the backside of the mosque start talking and making noise? In such state is one aloud to commence a salaat?

Q: Exactly when is it makruh to pray when having a urge to urinate? Is this only when one is realy about to urinate such that he is realy pressing himself to hold ? Sometimes I take wudhu and after a while I get a feeling of having little pressure, but I can feel myself freely without pressing to hold myself.

Can you tell me from which point the urge/pressure does become makruh?

Q: I read somewhere with reference to Radd ul Mukhtaar that if the picture is behind the person it is Makruh Tanzihi.

Also I read another reference that if the picture is at the left, or right or behind than it is makruh tanzihi, but if the picture is in front than it is makruh tahrimi, the reference was Fatawa Qadikhan 1/119. Can you please re-check this ?

Q: As a general rule does an act which would be makruh if done intentionally, if that act happens out of control of the person praying, does this make his salaah makruh ?

Q: If one is praying, and during last rakaat a boy with a animated t-shirt comes to the entrance of the room and he stands at 4 o'clock of the praying person from a distance of 3 meters, does the person salaah become makrooh.

س: أعطيني قائمة المكروهات التحريمية في المذهب الحنفي؟ أنا أعرف أنها تسقط الصلاة. (أرجو منكم الحصول على القائمة، لا مجرد النصوص الفقهية فقط، لأن في فهمها نوع من الصعوبة)

Q: If one does after performance of salaah find a picture that would make his salaah makruh, is it still makruh since he was unaware of the picture or forgot completely to  cover it when he commenced the salaah? and what if he was unaware when he commenced the salaah, but during salaah he saw the picture or remembered he forgot to cover a picture? I assume in such cases there is no karahaat.

Q: When arranging the row for prayer I saw that one man had a trouser with a PUMA logo (animation of a jaguar) at the side of the leg, so I did not stand next to him, but I stood next to the person who was standing next to him so that this animated picture would be not visible to me. However when we stood up for the 2nd rakah the man was for some seconds still in the sajdah posture so I saw this animated picture. Did my salaah become makruh and must I repeat it?

Q:

1. What is the status of Salaah performed with short sleeves (shirts/kurtas)?

2. What is the reason for it being makrooh?

I heard that Nabi (Sallallahu Alayhi Wasallam's) under arm or to the effect became visible while in salaah due to the sleeves being broad or wide. The portion above the elbow became visible as with short sleeves.

Q: What is the ruling regarding performing salaah with short sleeves or a T-Shirt?