);
			on_slide(slider_lb[no], slider_ub[no]);
			draw_slider(no);
		}
	}, false);
}

function draw_slider(no){
	x_template = slider_template[no]

	const slider = document.getElementById("interval_" + String(no));
	ctx = slider.getContext("2d");
	const lb = slider_lb[no];
	const ub = slider_ub[no];
	const min_x = slider_min_x[no];
	const max_x = slider_max_x[no];

	ctx.clearRect(0, 0, slider_w, slider_h);
	ctx.strokeStyle="#444444";
	ctx.fillStyle="#BBBBBB";
	const dw = slider_w - slider_margin_right - slide