Navigation buttons

Question

how do you create navigation button with mouseover effects

Answer 1

<button onmouseover="func(this,e);" href="#top">Navigate</button>

Answer 2

Or with css rules and peudo-selector ':hover'...
<style>.overred:hover { background-color:red; }</style>
<a href="" class="overred">link element</a>
<div class="overred">div element: could be almost any else</a>
<button>button element as well...</button>