[jQuery] Qty * price

[ebru...@gmail.com]

Hello,

I am working on a order form. I now have the following:

<table width="250" border="0" cellspacing="2" cellpadding="2">
  <tr>
    <td width="40%"><strong>Knuffel</strong></td>
    <td width="30%"><strong>Aantal</strong></td>
    <td width="30%"><strong>Prijs</strong></td>
  </tr>
  <tr>
    <td>Aapje</td>
    <td><input name="aantal_1" type="text" style="width:25px"
value="0" /></td>
    <td>&euro; <span id="total_1">0.00</span> </td>
  </tr>
  <tr>
    <td>Beertje</td>
    <td><input name="aantal_2" type="text" style="width:25px"
value="0" /></td>
    <td>&euro; <span id="total_2">0.00</span> </td>
  </tr>
  <tr>
    <td>Hondje</td>
    <td><input name="aantal_3" type="text" style="width:25px"
value="0" /></td>
    <td>&euro; <span id="total_3">0.00</span> </td>
  </tr>
  <tr>
    <td>Olifantje</td>
    <td><input name="aantal_4" type="text" style="width:25px"
value="0" /></td>
    <td>&euro; <span id="total_4">0.00</span> </td>
  </tr>
</table>

What i want is to get the subtotal of a product and the total price.
Is there a easy way for this using jQuery?

<span id="total_4">0.00</span> would change in the price for the
product * qty == aantal_1

And

<h3>Totaalbedrag: &euro; <span id="totaalprijs">0.00</span></h3>

would change in the total price of all the products.

Any one how can assist me in this?

Erwin