How to select an element by id and swapping an image ? ...

<script language="JavaScript" type="text/javascript" >

function setBeerIcon() {

var beerIcon = document.getElementById("beerIcon");

beerIcon.src = "images/"+getSelectValue("beer")+".jpg";

}

</script>

...

<img border="0" src="" id="brandIcon" alt="brand" />

<select name="beer" id="beer" onChange="setButton();setBeerIcon();">

<option value="--Select--">Select beer</option>

<option value="heineken">heineken</option>

<option value="sol">sol</option>

<option value="amstellight">amstellight</option>

<option value="coronalight">coronalight</option>

<option value="coronaextra">coronaextra</option>

<option value=""></option>

</select>