The more one knows, the more one will be able to control events. This sentence is found in the works of Francis Bacon (see also Bacon). if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}