Not working

Not working

Hi, friends i m developing a website and i m using 3 jquery 1 for menu 2nd for background image scroll and 3rd for the banner changing. Before i have using slideshow menu and background image working properly but when i used banner changing slide show it stops my background image changing jquery and very slow performance in ie7 - Pls help me out







<!DOCTYPE html>
<html>

<head>
<meta charset="utf-8">
<title>Full Page Background Image | CSS #1</title>
    
    
    
<!--    ####################################### Slideshow inclusion starts ####################################### -->

<script type="text/javascript" src="bsn.js"></script>   
    <!--    ####################################### Slideshow inclusion ends ####################################### -->
<!--Style Sheet for menu starts-->
<style type="text/css">

div#menu {
    top:40px;
    left:40px;
    width:350px;
/*padding:0 auto;
margin: 0 auto;*/
}

div#copyright { display: none; }

</style>

<!--Style Sheet for menu ends-->

<script type="text/javascript" src="jquery.min.js"></script>
<script type="text/javascript">

function thebackground() {
$('div.background img').css({opacity: 0.0});
$('div.background img:first').css({opacity: 1.0});
setInterval('change()',5000);
}

function change() {
var current = ($('div.background img.show')? $('div.background img.show') : $('div.background img:first'));
if ( current.length == 0 ) current = $('div.background img:first');
var next = ((current.next().length) ? ((current.next().hasClass('show')) ? $('div.background img:first') :current.next()) : $('div.background img:first'));
next.css({opacity: 0.0})
.addClass('show')
.animate({opacity: 1.0}, 1000);
current.animate({opacity: 0.0}, 1000)
.removeClass('show');
};

$(document).ready(function() {
thebackground();
$('div.background').fadeIn(1000); // works for all the browsers other than IE
$('div.background img').fadeIn(1000); // IE tweak
});

</script>

<!--Style Sheet linking for menu starts-->
<link type="text/css" href="menu.css" rel="stylesheet" />
    <script type="text/javascript" src="jquery.js"></script>
    <script type="text/javascript" src="menu.js"></script>
    <!--Style Sheet linking for menu ends-->


<link href="website.css" rel="stylesheet" type="text/css">
<link href="style.css" rel="stylesheet" type="text/css">
</head>

<body>
<div class="background" style="">
 <img src="images/bg.jpg" width="1400" height="819" alt="pic1" style="opacity: 1; " class="show"> 
<img src="images/bg1.jpg" width="1401" height="934" alt="pic2" style="opacity: 0; " class="">
 <img src="images/bg2.jpg" width="1400" height="934" alt="pic3" style="opacity: 0; " class="">
 <img src="images/bg3.jpg" width="1400" height="934" alt="pic4" style="opacity:0; " class="">
 </div>
    
    
<div id="page-wrap"><!-- Pagewrap Starts-->
    
 <div id="header"> <!-- Header starts -->
        <div id="logo_left"><img src="img/logo.png" width="312" height="165"></div>
        <div id="logo_right">
        <div id="logotext">
        
      SCAN REMEDIES PVT. LTD.

</div>
        </div>
        
      </div> <!-- Header ends -->

    <div id="menuouter"> <!-- Menuouter starts -->
   <div id="menu">
    <ul class="menu">
        <li><a href="#" class="parent"><span>Home</span></a>
            
        </li>
         <li><a href="#" class="parent"><span>Company Profile</span></a>
            
        </li>
        <li><a href="#" class="parent"><span>Products</span></a>
            <div><ul>
                <li><a href="cefchilo.html"><span>Cefchil-O</span></a></li>
                <li><a href="floragut.html"><span>Floragut - SBZ</span></a></li>
                <li><a href="scanrd.html"><span>ScanR - D</span></a></li>
                <li><a href="fluscanp.html"><span>Fluscan - P</span></a></li>
                <li><a href="fluscands.html"><span>Fluscan - DS</span></a></li>
                <li><a href="ascanp.html"><span>Ascan - P</span></a></li>
                <li><a href="vitazincplus.html"><span>Vitazinc - Plus</span></a></li>
                <li><a href="plethora.html"><span>Plethora</span></a></li>
            </ul></div>
        </li>
        <li><a href="#"><span>Inquiry</span></a></li>
        <li class="last"><a href="#"><span>Contacts</span></a></li>
    </ul>
</div>


<div id="copyright">Copyright &copy; 2012 <a href="http://apycom.com/">Apycom jQuery Menus</a></div>

 </div> <!-- Menuouter ends -->
 
 <!-- Slideshow Starts from here -->
    <div id="slide">
    <div id="slideinner">
   

  <img src="ssimg/005.png" alt="" name="cf1" width="951" height="151" id="cf1"  />
            
            <img src="ssimg/006.png" alt="" name="cf2" width="951" height="151" id="cf2"  />
            
            <img src="ssimg/007.png" alt="" name="cf3" width="951" height="151" id="cf3"  />
            
            <img src="ssimg/008.png" alt="" name="cf4" width="951" height="151" id="cf4"  />
            
            



            <script type="text/javascript">



            var cf = new Crossfader( new Array('cf1','cf2','cf3','cf4'), 1200, 3000 );



            </script>
   
    <!-- <img src="img/slide.jpg" width="951" height="151"> -->
    </div>
    </div>
    
     <!-- Slideshow ends here -->
 <!-------------------------- Content Starts from here ----------------------------------------- -->
  
  <div id="content"> <!-- Content starts -->

     <div id="leftouter"> <!-- Leftouter Starts -->
  
     
    <br>
<br>
<br>
<br><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>






 
    </div> <!-- Leftouter ends -->


  <div id="right"> <!-- Right starts -->
   <br>

      </div> <!-- Right ends -->
    
  



</div> <!-- Content ends -->

   <div id="footerouter">
 <div id="footer"> <!-- Footer Starts -->
 <div id="icon"> <!-- Social Contact starts -->
 
<table width="450" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td width="50"><img src="img/facebook.png" width="48" height="48"></td>
    <td width="400"><img src="img/twitter.png" width="48" height="48"></td>
  </tr>
</table>

   </div> <!-- Social contact ends -->
 </div> <!-- Footer ends -->
    </div> <!-- Footer outer ends -->
   
   
</div> <!-- Pagewrap Ends -->
</body>

</html>