That still doesn't work for the line underneath. This will solve it.
HTML Code:
<tr><td class="thead" colspan="<if condition="$show['threadicons'] AND $show['inlinemod']">7</if><if condition="$show['threadicons'] AND !$show['inlinemod']">6</if><if condition="!$show['threadicons'] AND $show['inlinemod']">6</if><if condition="!$show['threadicons'] AND !$show['inlinemod']">5</if>"> </td></tr>