I'm trying to add a tweet button to html page , I use the official code from the twitter button generator , http://twitter.com/about/resources/buttons#tweet
when I test the page on chrome and Firefox , the button doesn't appear , only an underlined text says : "Tweet"
here is the code :
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
</head>
<body>
<a href="https://twitter.com/share" class="twitter-share-button" data-url="http://www.3eesho.com/magazine/index.html" data-text="issue2 now" data-via="3eesho" data-hashtags="ipad,health,arabicmagazine">Tweet</a>
<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script>
</body>
</html>