function(id) {
			var cleared = running[id] != null;
			if (cleared) {
				running[id] = null;
			}

			return cleared;
		}
function(id) {
			var cleared = running[id] != null;
			if (cleared) {
				running[id] = null;
			}

			return cleared;
		}
function ( id ) { var cleared = running [ id ] != null ; if ( cleared ) { running [ id ] = null ; } return cleared ; }
Stops the given animation.

@param {Integer} id Unique animation ID
@return {Boolean} Whether the animation was stopped (aka, was running before)
Stops the given animation .
Clears the context associated with the specified context id.