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 rotatecontent(){
    //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("dyncontent")
        setInterval("rotatecontent()", 4000)
    }
}