div overflow help

this is the code i'm having problems with:


<style type="text/css">

body {
font: normal 10px Verdana, Arial, Helvetica, sans-serif;
color:#666;
margin : 0;
padding : 0;
}

/* text */

h1 {
font: bold 10px Verdana, Arial, Helvetica, sans-serif;
line-height:30px;
}

/* div classes */

div.row {
position:relative;
left:10px;
width:326px;
height:20px;
z-index:1;
margin-bottom:8px;
text-align:right;
}

div.cell_title, div.cell_content {
position:absolute;
top:0px;
float:left;
padding:0px 0px 0px 8px;
border:1px solid #E4E4E4;
text-align:left;
line-height:17px;

}

div.cell_title {
background-color: #E4E4E4;
left:0px;
width:100px;
z-index:2;
}

div.cell_content {
background-color:#FCFCFC;
left:100px;
width:224px;
z-index:3;

}

/* form elements */

.input {
font: normal 10px Verdana, Arial, Helvetica, sans-serif;
color:#666;
background-color: #FCFCFC;
height:15px;
width:213px;
border:0;
}

.textarea {
font: normal 10px Verdana, Arial, Helvetica, sans-serif;
color:#666;
background-color: #FCFCFC;
height:100px;
width:213px;
border:0;
overflow:auto;
}

</style>

<h1>Contact</h1>
<form action="?menu=contact" method="post" name="contact">
<div class="row">
<div class="cell_title"><label for="name">name:</label></div>
<div class="cell_content"><input type="text" class="input" name="name" id="name"/></div>
</div>

<div class="row">
<div class="cell_title"><label for="email">email:</label></div>
<div class="cell_content"><input type="text" class="input" name="email" id="email" /></div>
</div>

<div class="row">
<div class="cell_title"><label for="message">message:</label></div>
<div class="cell_content"><textarea class="textarea" name="message" id="message"></textarea></div>
</div>

<div class="row">
<input type="image" src="includes/images/btn_add.gif" name="Submit" value="Submit">
</div>
</form>



My problem is that my "row" div's overlay if their content is larger. Because of that i cannot see the send button from my form (the textarea height is bigger that the height of the "row" div - i need the layer to
expland according to the content, but i don't want it to overlay on what is after it!).
I hope that you understood my problem and could help my with it.

Thanks in advance!