-dasharray","3, 3").style("stroke-opacity",.9).style("stroke-width",2).style("stroke","#000000");
	svg_u.append("rect").attr("class","pointer_").attr("x",0).attr("y",c_u(Math.min(data_treshold[0].nFeature_RNAup,data_umax))-10).attr("width",width*0.5).attr("height",20)
		 .attr("fill","green").attr("opacity",.05).call(d3.drag().on("drag",dragged_u1).on("end",dragended_u1));
	svg_u.append("rect").attr("class","pointer_").attr("x",0).attr("y",c_u(Math.max(data_treshold[0].nFeature_RNAdown,data_umin))-10).attr(