function( keypath, root ) {
				var i = queue.length,
					animation;
				while ( i-- ) {
					animation = queue[ i ];
					if ( animation.root === root && animation.keypath === keypath ) {
						animation.stop();
					}
				}
			}
function( keypath, root ) {
				var i = queue.length,
					animation;
				while ( i-- ) {
					animation = queue[ i ];
					if ( animation.root === root && animation.keypath === keypath ) {
						animation.stop();
					}
				}
			}
function ( keypath , root ) { var i = queue . length , animation ; while ( i -- ) { animation = queue [ i ] ; if ( animation . root === root && animation . keypath === keypath ) { animation . stop ( ) ; } } }
TODO optimise this
TODO optimise this