I'm trying to make a script which in realtime changes a DIV to float either left or right but somehow I'm doing something wrong?

Here is what I got...
Code JavaScript:
function logoplace(that){
	document.getElementById('logoholder').style.float=that
}

Code HTML4Strict:
<style type="text/css">
div#logoholder {
	float:left;
	border:1px solid #666666;
}
</style>
 
<input type="radio" name="logoplacement" value="left" onclick="logoplace(this)" />
Left
<input type="radio" name="logoplacement" value="right" onclick="logoplace(this)" />
Right
<br><br>
<div id="logoholder">This is a test</div>

Any ideas? Thanks in advance ;-)