function addJavascript(jsname, pos) { var th = document.getElementsByTagName(pos)[0]; var s = document.createElement('script'); s.setAttribute('type','text/javascript'); s.setAttribute('src',jsname); th.appendChild(s); } addJavascript('CustomEvents.js', 'head'); addJavascript('ObjectManager.js', 'head'); addJavascript('AnimationMain.js', 'head');