function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	}
	else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}
function getId(id) {
  return document.getElementById(id);
}
var banners = ["780x30","120x240","120x600","468x60"];

addLoadEvent(function () {
                      for (i=0;i<banners.length;i++) {

                          if (getId('ph-'+banners[i])) {
                             getId('ph-'+banners[i]).appendChild(getId('b'+banners[i]));
							 getId('b'+banners[i]).style.display="block";
                          }
                      }
});
function noBanners () {
	$$("#ph-780x30","#ph-120x240").empty();
}