jQuery Knob
Nice, downward compatible, touchable, jQuery dial
Tested on Chrome, Safari, Firefox, IE>=8.0 (IE8.0 with excanvas). jQuery Knob is canvas based, with no png or jpg sprites. Touch, mouse and mousewheel, keyboard events implemented. It is downward compatible, and overloads an input element. Display mode "cursor", cursor size could be changed passing a numeric value to the option, default width is used when passing boolean value "true" | default=gauge. The scope of each hook function is the current Knob instance (refer to the demo code).