hi both sorry to bother u again.. you both guys give me a solid understand about bounding. but this is something little different.. please find the attachment and check those red arrows and highlight. inside the highlighted circle when user click and drag its only update to 242px only on both direction and the background drag also limited. you can experience it and i saw the code, its little bit jumbled. but i can tell, there is a movement limit involve in this. and i'm mentioning about these limits not bounding limits. i hope you guys can understand what i'm trying to tell you.