Someone

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


function dccLoad() {
	var rotateOne = function() {
		window.alert('first');
	}
	window.setTimeout("rotateOne()", 3000);
}


addLoadEvent(dccLoad);