jquery simplemodal close wont work in firefox

jquery simplemodal close wont work in firefox

I am using jquery.simplemodal 1.3.5 (i tried older versions) the close button doesnt close the modal in firefox (i tried IE and it work fine) this is the test page i am using: 

  1. <html>
    <head>
        
    <title>Untitled Page</title>
        
    <style>
        
    #simplemodal-overlay {
       background
    -color:#000;
       cursor
    :wait;
     
    }
     
    #simplemodal-container a.modalCloseImg {
      background
    : url(../images/modal_close.png) no-repeat;
      width
    :25px;
      height
    :29px;
      display
    :inline;
      z
    -index:3200;
      position
    :absolute;
      top
    :15px;
      right
    :18px;
      cursor
    :pointer;
     
    }
     
    .modala
     
    {
      width
    : 372px;
      height
    : 206px;
      background
    : url(../images/modal.png) no-repeat;
     
    }
        
    </style>
    </head>
    <body>
     test page
        

    <script language="javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript"></script>
        
    <script language="javascript" src="/include/jquery.simplemodal-1.3.5.js" type="text/javascript"></script>
        
    <script type="text/javascript">
      $
    ("body").click(function() { $.modal("<div class=\"modala\"><h1>SimpleModal</h1></div>", {overlayClose: true} ); });
        
    </script>
    </body>
    </html>
what can be the problem? is it a known problem with simplemodal and FF?