title: load Same Picture Without cache
body: <pre><code>&lt;div id="dialog"&gt;
      &lt;img src="NewCapthch.jpg" id="imgcaptcha"/&gt;
  &lt;/div&gt;
  
  &lt;input id="Submit1" onclick ="dial();" type="submit" value="submit" /&gt;
  
  function dial(){
        jQuery.get("Captch.aspx?id=" + Math.random());//success run and get
        $("#imgcaptcha").attr("src", "NewCapthch.jpg?id="+Math.random());//dose not set new image
      $("#dialog").dialog()
  };
  </code></pre>
  
  <p>what does not change image?</p>
  
  <p>I think load From Cache.</p>