function getElementByClass(){
        var inc=0;
        var id='feature0'
        for(i=1;i<7;i++)
        {
           var f=id+i                     
           if(document.getElementById(f) != null)
           {
             messages[inc++]=document.getElementById(f)
           }
        }        
      }
      function rotatecontent(){
        //get current message index (to show it):
        curcontentindex=(curcontentindex<messages.length-1)? curcontentindex+1 : 0
        for(i=0;i<messages.length;i++)
        {
           messages[i].style.display="none" //hide previous message
        }
        messages[curcontentindex].style.display="block" //show current message
      }
      function activate(val)
      {
          getElementByClass() 
         for(i=0;i<messages.length;i++)
         {
           messages[i].style.display="none" //hide previous message
         }
         document.getElementById(val).style.display='block'
         clearInterval(rotateinterval)
      }
      function deactivate(val)
      {
         getElementByClass() 
         for(i=0;i<messages.length;i++)
         {
           if(i==0)
           {
             messages[i].style.display="block" //hide previous message
           }
           else
           {
             messages[i].style.display="none" //hide previous message
           }
         }
      }
      var curcontentindex=0
      var messages=new Array()
      var rotateinterval
      window.onload=function(){
        if (document.all || document.getElementById){  
         getElementByClass()        
          rotateinterval=setInterval("rotatecontent()", 5000)
        }
      }