Bilde som header i table

har du sat <table cellspacing="0" cellpadding="0">?

Jeg har følgende kode

<table border=0 cellspacing=0 cellpadding=0>
<tr valign=bottom align=center>
  <td align=left><img src="header.gif" width=171 height=19 border=0></td>
</tr>
<tr valign=top align=center>
  <td>
  <table border=0 width= 171 cellpadding=1 cellspacing=0 bgcolor=#708090 >
    <tr>
    <td width=100%> <table width=100% border=0 cellpadding=4 cellspacing=0 bgcolor=#708090>
    <tr>
    <td bgcolor=#CAE2F0 valign=top width=100%>
      <input type="text" name="search" value="" size="15" maxlength=256>
    </td>
    </tr>
  </table>
  </td>
</tr>
</table>

prøv denne:

<table border="0" width="171" cellspacing="0" cellpadding="0">
<tr>
  <td width="100%" background="header.gif" height="19">&nbsp;</td>
</tr>
<tr>
  <td>
  <table width=100% border=0 cellpadding=4 cellspacing=0 bgcolor=#708090>
    <tr>
    <td bgcolor=#CAE2F0 valign=top width=100%>
      <input type="text" name="search" value="" size="15" maxlength=256>
    </td>
    </tr>
  </table>
  </td>
</tr>
</table>

Undgå mellemrum og linieskift inden for <td>...</td>