var pages=new Array();
  pages[0]="weather2.html";
  pages[1]="weather3.html";
  pages[2]="weather4.html";
  pages[3]="weather5.html";
  pages[4]="weather1.html";

var i=0;
var time=3000;

function pageChange() {
  alert(i);
  ajaxpage(pages[i],'contentarea');
  $i++;
  if ($i==pages.length) {
    $i=0;
  }
  setTimeout("pageChange()",time);
}

pageChange();