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

var running = false;
function runScripts(){
	if(!running){
		run_advertisement();
	}
	running = true;
}

addLoadEvent(runScripts);