<style type="text/css">  
  .group1{  
  visibility: hidden;  
  }  
  </style>  

  <script type="text/javascript">  

  /***********************************************  
  * Random Content Order script- © Dynamic Drive DHTML code library (www.dynamicdrive.com)  
  * This notice MUST stay intact for legal use  
  * Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code  
  ***********************************************/  

  function randomizeContent(classname){  
  var contents=randomizeContent.collectElementbyClass(classname)  
  contents.text.sort(function() {return 0.5 - Math.random();})  
  var tbodyref=contents.ref[0].tagName=="TR"? contents.ref[0].parentNode : new Object()  
  for (var i=0; i<contents.ref.length; i++){  
  if (tbodyref.moveRow) //if IE  
  tbodyref.moveRow(0, Math.round(Math.random()*(tbodyref.rows.length-1)))  
  else  
  contents.ref[i].innerHTML=contents.text[i]  
  contents.ref[i].style.visibility="visible"  
  }  
  }  

  randomizeContent.collectElementbyClass=function(classname){ //return two arrays containing elements with specified classname, plus their innerHTML content  
  var classnameRE=new RegExp("(^|\\s+)"+classname+"($|\\s+)", "i") //regular expression to screen for classname within element  
  var contentobj=new Object()  
  contentobj.ref=new Array() //array containing references to the participating contents  
  contentobj.text=new Array() //array containing participating contents' contents (innerHTML property)  
  var alltags=document.all? document.all : document.getElementsByTagName("*")  
  for (var i=0; i<alltags.length; i++){  
  if (typeof alltags[i].className=="string" && alltags[i].className.search(classnameRE)!=-1){  
  contentobj.ref[contentobj.ref.length]=alltags[i]  
  contentobj.text[contentobj.text.length]=alltags[i].innerHTML  
  }  
  }  
  return contentobj  
  }  

  </script>

<div class="group1">  
  Content 1  
  </div>  

  <div class="group1">  
  Content 2  
  </div>  

  <div class="group1">  
  Content 3  
  </div>  

  <div class="group1">  
  Content 4  
  </div>  

  <div class="group1">  
  Content 5  
  </div>  

  <script type="text/javascript">  
  //randomize order of contents with DIV class="group1"  
  randomizeContent("group1")  
  </script>