Hiding a <td> in a <tr> with CSS

The solution above works, but try to use this to show your cells:

display: table-cell //show the cells

You can use the last-child selector to only target the last td in the matched set, or for better browser compatibility you should add a class to the td you want to hide and target that specifically.

.ms-globalnavicon table tr td:last-child
{
    visibility:collapse;
}

Edit: Ok, so we need better IE support, and we have to use pure CSS. Here is a solution that relies on the fact the IE7 and 8 do support first-child:

.ms-globalnavicon table tr td
{
    display:none;
}
.ms-globalnavicon table tr td:first-child
{
    display:block;
}

(note: using display rather than visibility, and using block rather than table-cell)

http://jsfiddle.net/BL6nU/2/ (with red border added for clarity)

You need display:none;

http://jsfiddle.net/9cPYN/

Easiet / safest way is to add a class to target. http://jsfiddle.net/gJvhs/

.hideANDseek {
  display: none;
}

<div class="ms-globalnavicon">
  <table cellpadding="0" cellspacing="0" style="border:solid 0px red;">
    <tr>
      <td align="left" valign="top" style="padding-right:10px;padding-top:5px;">
        <a href="http://unet.unisys.com" target="_blank">
          <img src="/_layouts/images/SiteIcon.png" alt="Unisys" />
        </a>
      </td>
      <!-- added the class here -->
      <td class="hideANDseek" align="left" valign="top" style="padding-top:9px;">
        <a href="http://google.com">My Site</a>
      </td>
    </tr>
  </table>
</div>

Edit: Or you could use jquery to add that class.

http://jsfiddle.net/gJvhs/1/ - works crossbrowser ( also ie6+)

Edit: Another thing.. http://sizzlejs.com/ - https://github.com/jquery/sizzle/wiki/Sizzle-Home