function DrawBlock(){var a=document.getElementById("cnvsBlock");if(a.getContext){var b=a.width,c=b/(400/series);a.setAttribute("height",c);a=a.getContext("2d");a.fillStyle="#d3d3d3";a.strokeStyle="#000";a.fillRect(0,0,b,c);a.strokeRect(0,0,b,c);b=400/b;a.beginPath();a.moveTo(front/b,0);a.lineTo(back/b,c);a.stroke();a.fillStyle="#000";a.font="14px Verdana";a.fillText(front,2,16);a.fillText(back,2,c-4)}};