var min = 02;   // set the minutes

function countDown() {

 min=Math.floor(Math.random()*9999);

	time = min;
if (document.getElementById) { theTime.innerHTML = time; }
  SD=window.setTimeout("countDown();", 900);

}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(function() {
  countDown();
});