height: 100% geht nicht

[Azzu]

Hallo,

ich möchte mir einige Termine in meiner SQL-Datenbank in einem HTML-Kalender(Liste) anzeigen lassen. Dieser sieht momentan so aus:
http://i25.tinypic.com/2myvtko.jpg
Wie man sieht, erstreckt sich die Beschreibung nicht über die gesamte Zellenhöhe. Wie erreiche ich das nun?

Hier noch Quelltext etc.:
http://i28.tinypic.com/2ro592w.jpg
http://i26.tinypic.com/iclkzt.jpg

CSS:

.cal_list .cell_desc {  
	height: 100%;  
	padding-bottom: 1px;  
	padding-left: 1px;  
	padding-right: 1px;  
}  
  
.cal_list .cell_desc_content {  
	min-height: 100%;  
	height: 100%;  
	width: 94px;  
	overflow: hidden;  
}  
  
.cal_list .cell_desc {  
	border-right: 1px solid black;  
}  
  
.cal_list .cell_desc_content {  
	border: 1px solid #444444;  
	border-top: 0;  
	background-color: #bcd6ee;  
	padding: 0px 1px 0px 1px;  
}

HTML:

<table id="week_table" class="cal_list" border="1">  
	<colgroup width="100" span="8"></colgroup>  
  
	<thead id="cal_list_header">  
		<tr> [........] </tr>  
	</thead>  
	<tbody>  
  
	[.........]  
	[.........]  
  
	<tr>  
  
		<td class="cell_time" id="time_id_56"><div class="time0_line">14:00</div></td>  
		<td class="cell_shown"><div class="cell_shown_content">&nbsp;</div></td>  
		<td class="cell_shown"><div class="cell_shown_content">&nbsp;</div></td>  
		<td class="cell_mini" rowspan="2"><div class="cell_mini_content">Miniatur-Even...</div></td>  
		<td class="cell_shown"><div class="cell_shown_content">&nbsp;</div></td>  
		<td class="cell_title" rowspan="2"><div class="cell_title_content">ausm fenster ...</div></td>  
		<td class="cell_title" rowspan="2"><div class="cell_title_content">MMMMMMMMMMMMM...</div></td>  
		<td class="cell_shown"><div class="cell_shown_content">&nbsp;</div></td>  
	</tr>  
	<tr>  
		<td class="cell_time" id="time_id_58"><div class="time2_line"></div></td>  
		<td class="cell_shown"><div class="cell_shown_content">&nbsp;</div></td>  
		<td class="cell_shown"><div class="cell_shown_content">&nbsp;</div></td>  
		<td class="cell_shown"><div class="cell_shown_content">&nbsp;</div></td>  
		<td class="cell_shown"><div class="cell_shown_content">&nbsp;</div></td>  
		<td class="cell_desc" rowspan="6"><div class="cell_desc_content"> ganz lange</div></td>  
		<td class="cell_desc" rowspan="6"><div class="cell_desc_content"> Seit zwei Jahren ist meine Arbeit in D...</div></td>  
		<td class="cell_shown"><div class="cell_shown_content">&nbsp;</div></td>  
	</tr>  
  
	[.........]  
	[.........]  
	  
	</tbody>  
</table>