<html>
<head>
<script language="JavaScript">
<!--
function recalc()
{
document.getElementById ('fieldRes').innerHTML=parseInt(document.getElementById('field1').value)*parseInt(document.getElementById('field2').value);
}
//-->
</script>
</head>
<body>
<tr>
<td style="padding-right:10px;">Вид услуги</td><BR>
<td>
<select name="b" id="field2" onchange="recalc()" style="width:150">
<option value="0" selected="selected">Выбрать...</option>
<option value="7">1</option>
<option value="8">2</option>
<option value="15">3</option>
<option value="33">4</option>
</select>
</td>
</tr>