Things which render the Salaah Makrooh

Q: How is it to perform salaah wearing a T-shirt?

Q: I would like to know, is it impermissible to close ones eyes in salaah? And in particular in sujood? Also is it from authentic hadeeth that one's hoors in jannah will be blind if one closes his eyes in salaah?

Q: I have heard that Salaah is more makrooh when our trousers (pants) are folded up during Salaah? Please advise with the reference from Hadith.

Q: Is it permissible for one to perform salaah if his bladder is full and he has the need to relieve himself? Similarly, if one is performing salaah and one feels the pressing need to relieve oneself, can one continue his salaah or should he break his salaah, and after relieving himself, make wudhu and thereafter perform the salaah? 

Q: Is namaaz makruh if the jubba does not cover the elbows?

Q: If after saying 3 or more times the tasbih, one makes unintentionally a shaking movement with the head (because of holding the forehead and nose firmly to the ground) does this break the prayer (in the view of Abu Yusuf that tadil arkaan is fard)? Or is after saying 3 times the tasbih the obligatory sajdah already fulfilled and the movement does not matter?

Q: There are 2 silence boards in the masjid, but the one in the masjid has a white background and the head and hand are black color. Sometimes when I join the saff this board falls in front of me, or to my left or right, or sometimes diagonal (2 o'clock). Would in such instance my salaah with this board makruh? I have told the chairman about this board and he told me since the head has no eyes there is nothing wrong with it. Is this true? Since I have told them and they say there is nothing wrong with it, and if it is in reality indeed makruh is it still makruh for me since I have approached them about?

Q: If someone keeps his books or study materials (secular) open in his study table containing pictures of animated objects then if he prays Salaah in that room, will it be valid. (If he stands for Salaah then his study table will be by his right side and it will be sufficiently far to go unnoticed).

Q: Someone told me that it is a sin to fold the pants above the ankles before performing salaah, and it is better to let the pants hang below the ankles. He mentioned that there is a hadith of Rasulullah (sallallahu alaihi wasallam) that prohibits folding the garments in salaah. Is this correct?

Q:

1. Is it permissible for a man to wear short sleeves while reading salaah?

2. Is it permissible for a man to read salaah without wearing a topi?

3. Is it permissible for a man to read salaah without a kurta?