Bessere Möglichkeiten durch mehr Freiheitsgrade
// 2. This code loads the IFrame Player API code asynchronously. ///var tag = document.createElement('script'); // This is a protocol-relative URL as described here: // http://paulirish.com/2010/the-protocol-relative-url/ // If you're testing a local page accessed via a file:/// URL, please set tag.src to // "https://www.youtube.com/iframe_api" instead. ///tag.src = "//www.youtube.com/iframe_api"; ///var firstScriptTag = document.getElementsByTagName('script')[0]; ///firstScriptTag.parentNode.insertBefore(tag, firstScriptTag); // 3. This function creates an