			var keyHandler = new mxKeyHandler(graph);

				// Changes the default style for edges "in-place" and assigns
				// an alternate edge style which is applied in mxGraph.flip
				// when the user double clicks on the adjustment control point
				// of the edge. The ElbowConnector edge style switches to TopToBottom
				// if the horizontal style is true.
				var style = graph.getStylesheet().getDefaultEdgeStyle();
				style[mxConstants.STYLE_ROUNDED] = true;
				style[mxConstants.STYLE_EDGE] = mxEdgeStyle.E