What html code do I use to create the left-navigation with scrolling-center-content functionality in a web page. I have illustrated what I am looking for below using a <table> but it just makes one, big, unified web page. Thanks.
<tr><td colspan=2>This is my header cell</td></tr>
<td> This is my left-navigation cell </td>
<td> center-content cell. This should scroll independently, of left-nav and header /<td>