mxDragSource.prototype.startDrag=function(a){this.dragElement=this.createDragElement(a);this.dragElement.style.position="absolute";this.dragElement.style.zIndex=this.dragElementZIndex;mxUtils.setOpacity(this.dragElement,this.dragElementOpacity);this.checkEventSource&&mxClient.IS_SVG&&(this.dragElement.style.pointerEvents="none")};mxDragSource.prototype.stopDrag=function(){this.removeDragElement()};