var userAgent = window.navigator.userAgent.toLowerCase();
if(userAgent.indexOf('msie') != -1 || userAgent.indexOf('trident') != -1) {
document.write('
');
} else {
document.write('');
var btn = document.getElementsByClassName('twitter-share-button');
var el = document.createElement('script');
el.charset = 'utf-8';
el.type = 'text/javascript';
el.src = 'https://platform.twitter.com/widgets.js';
btn[0].parentNode.insertBefore(el, btn[0].nextSibling);
}
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