jquery moblie 1.4.1 icons can not show in android 2.x browser

jquery moblie 1.4.1 icons can not show in android 2.x browser

my web page been opened with android2.X browser,I can't find picture where statement in data-icon. and then on when I download the demo  of the jquerymobile1.4.1 also find that icon has the same problem.How to solve？

hi,
      while i use the jquery to build a web app, i find sometime the pic cant be shown by the system browser in android phone which version is 2.3.
     
     here is my code: 

  1.         
  2. <!DOCTYPE html>
  3. <html>
  4. <head>
  5. <meta charset="utf-8">
  6. <meta name="viewport" content="width=device-width, initial-scale=1">
  7. <title>Icons - jQuery Mobile Demos</title>
  8. <link rel="shortcut icon" href="../favicon.ico">
  9.     <link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Open+Sans:300,400,700">
  10. <link rel="stylesheet" href="../css/themes/default/jquery.mobile-1.4.1.min.css">
  11. <link rel="stylesheet" href="../_assets/css/jqm-demos.css">
  12. <style id="custom-icon">
  13.         .ui-icon-myicon:after {
  14. background-image: url("../_assets/img/glyphish-icons/21-skull.png");
  15. background-size: 18px 18px;
  16. }
  17.     </style>
  18. </head>
  19. <body>
  20. <div data-role="page" class="jqm-demos" data-quicklinks="true">

  22. <div data-role="header" class="jqm-header">
  23. </div>

  25. <div role="main" class="ui-content jqm-content">

  27.         <h1>Icons</h1>

  29.         <div data-demo-html="true">
  30. <button class="ui-btn ui-shadow ui-corner-all ui-btn-icon-left ui-icon-action">action</button>
  31. <button class="ui-btn ui-shadow ui-corner-all ui-btn-icon-left ui-icon-alert">alert</button>
  32. <button class="ui-btn ui-shadow ui-corner-all ui-btn-icon-left ui-icon-arrow-d">arrow-d</button>
  33. <button class="ui-btn ui-shadow ui-corner-all ui-btn-icon-left ui-icon-arrow-d-l">arrow-d-l</button>
  34. <button class="ui-btn ui-shadow ui-corner-all ui-btn-icon-left ui-icon-user">user</button>
  35. <button class="ui-btn ui-shadow ui-corner-all ui-btn-icon-left ui-icon-video">video</button>
  36.         </div>
  37.         <h2>Custom Icons</h2>


  40.         <div data-demo-html="true" data-demo-css="#custom-icon">
  41. <button class="ui-btn ui-shadow ui-corner-all ui-btn-icon-left ui-icon-myicon">myicon</button>
  42. </div>
  44. </div>

  46. </div>

  48. </body>
  49. </html>
    50.     
      please help me,  and i use the jquery mobile 1.4.1, the question is still exsit. The icon in the demo(jquery mobile 1.4.1)  can not  be shown normly.

      sorry for my poor english.  thanks