求助：jsp在内存中生成的图片怎么在同一页面的固定表格中显示？

各位大侠：这是jsp在内存中生成图片的代码，但是生成的图片不是在原页面显示，而是在一张空白的页面显示的，求问怎么在我指定的同一页面的display区域显示呢？myeclipse中运行的
期待各位大侠的解答啊，谢谢了！<%@ page autoFlush="false"  import="java.awt.*,java.awt.image.*,com.sun.image.codec.jpeg.*,java.util.*" %><%
    String ImageStr = request.getParameter("ID_Text");
    if(ImageStr==null || ImageStr.equals(""))
    {
        response.setContentType("text/html; charset=gb2312");
 %>
<HTML>
 <HEAD>
  <title>Http://www.lionsky.net</title>
  <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
  </HEAD>
 <body>
  <form  id="Form1" method="post">
    <input type="text" id="ID_Text" name=ID_Text onafterpaste="this.value=this.value.replace(/\D/g,'')" onkeyup="this.value=this.value.replace(/\D/g,'')">
    <input type=submit value="GO">
    <table width="332" align="center" border="2" bordercolor="#000000" cellspacing="0"
     cellpadding="0" bordercolorlight="#000000" bordercolordark="#FFFFFF">
    <tr>
    <td id="rgb" align="center" height="100">display</td>
    </tr>
    </table>
  </form>
 </body>
</HTML> <%
       }
       else
       {
        out.clear();
        response.setContentType("image/jpeg");
        response.addHeader("pragma","NO-cache");
        response.addHeader("Cache-Control","no-cache");
        response.addDateHeader("Expries",0);
        int width=300, height=100;
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        Graphics g = image.getGraphics();
        //以下填充背景颜色
              int b=Integer.parseInt(ImageStr);
        g.setColor(new Color(b,0,0));
        g.fillRect(0, 0, width, height);
        String random="random";
               g.dispose();
        ServletOutputStream outStream = response.getOutputStream();
        JPEGImageEncoder encoder =JPEGCodec.createJPEGEncoder(outStream);
        encoder.encode(image);
        outStream.close();
    }%>JSP内存图片