var timer;
var ondisplay=1;
var maxshow=1;

function refresh() {
  clearTimeout(timer);
  eval("document.all.tick"+ondisplay+".style.display='none'");
  ondisplay++;
  if (ondisplay>(maxshow)) {
    ondisplay=1;
  }
  eval("document.all.tick"+ondisplay+".style.display='inline'");
  timer=setTimeout("refresh()",2500);
};

function setmax(number) {
  maxshow=number;
}