a+"px";this.shiftPreview1.style.top=b+"px";this.shiftPreview2.style.left=a+"px";this.shiftPreview2.style.top=b+"px"}else c.style.left=a+"px",c.style.top=b+"px";this.panDx=a;this.panDy=b;this.fireEvent(new mxEventObject(mxEvent.PAN))}};mxGraph.prototype.zoomIn=function(){this.zoom(this.zoomFactor)};mxGraph.prototype.zoomOut=function(){this.zoom(1/this.zoomFactor)};