Алексей Беспалов

<span class="hoverable">sone</span><span class="hoverable">words</span><span class="hoverable">here</span>
<script>
$("span.hoverable").hover(function () {
    var word = $(this).html(); // there is a word to send to server
});
</script>

function onLinkClick() {
  $('head').append('<link rel="stylesheet" href="animate.css" type="text/css" />');
  $('head').append('<link rel="stylesheet" href="animate2.css" type="text/css" />');
  // ваш код
}