jquery - Drag and drop on Javascript -

jquery - Drag and drop on Javascript -

i implemented drag , drop here. seek clicking on ball , dragging around.

http://joelin.org/p/mouse2.html

however, used html element 1 catches mouse events. if utilize ball element grab events instead, mouse pointer leaves ball behind if mouse pointer moves fast.

i listener attached ball can attach listeners multiple balls. possible? thanks,

have tried jquery draggable? http://jqueryui.com/draggable/

javascript jquery html css