if (document.all || document.getElementById){ //if IE4 or NS6+
 document.write('<style type="text/css">\n');
 document.write('.dyncontent2{display: none;}\n');
 document.write('</style>');
}

var curcontentindex=0;
var messages=new Array();

function getElementByClass(classname){
 var inc=0;
 var alltags=document.all? document.all : document.getElementsByTagName("*");
 for (i=0; i<alltags.length; i++){
   if (alltags[i].className==classname)
     messages[inc++]=alltags[i];
 }
}

function rotatecontent1(){
 //get current message index (to show it):
 curcontentindex=(curcontentindex<messages.length-1)? curcontentindex+1 : 0;
 //get previous message index (to hide it):
 prevcontentindex=(curcontentindex==0)? messages.length-1 : curcontentindex-1;
 messages[prevcontentindex].style.display="none"; //hide previous message
 messages[curcontentindex].style.display="block"; //show current message
}

window.onload=function(){
 if (document.all || document.getElementById){
   getElementByClass("dyncontent2");
   setInterval("rotatecontent1()", 5000);
 }
}