much better to use a css rule than attributes
<td class=\"daily_total_style\" style=\"vertical-align: text-bottom\">
EDIT: it's also better to assign this style to a class and assign also this class to your td
CATCHED THE ERROR:
You are applying valign to inner td
, not container one.
Your td cointainer have to look like this:
<td class="calendar_cell_middle" width="14%" valign="bottom" height="25%">
however, valign it's not more supported in HTML5, so try to include it as css. More, avoid this inner tables, are really hard to manage !