mxGraph.prototype.addCellOverlay=function(a,b){null==a.overlays&&(a.overlays=[]);a.overlays.push(b);var c=this.view.getState(a);null!=c&&this.cellRenderer.redraw(c);this.fireEvent(new mxEventObject(mxEvent.ADD_OVERLAY,"cell",a,"overlay",b));return b};mxGraph.prototype.getCellOverlays=function(a){return a.overlays};