Bad Html Example to clean on paste

bad.html

    <h3 class="class">Some supported heading</h3>
    <h6>non supported heading</h6>
    <style type="text/css">
    font {
    font-family: arial;
    font-size: 140%;
    }
    </style>
<h1><p>PASTE CHECK</p></h1>
<h1><a href="#">PASTE CHECK</a></p></h1>
<p>Eempttyty</p>
<p></p>
<p> </p>
<p> </p>
<p>EMPTy</p>
<pre id="script">dynamically added text.</pre>
<font color="red">RED</font>
<b onclick="alert('BOLD')">bold</b>
<!-- What to do with this? -->
<!--? test ?-->
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
<p class="MsoNormal"><b style="mso-bidi-font-weight: normal">
<span style="FONT-SIZE: 10pt; BACKGROUND: red; COLOR: #ff9900; mso-bidi-font-family: Arial; mso-highlight: red">Sample MS Word content</span></b>
<b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 10pt; COLOR: #ff9900; mso-bidi-font-family: Arial">
<!--?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /--><o:p></o:p></span></b></p></span></span>
aaa