Setting And Reading Value In A <span>

Jul 27, 2010

I just can't get this to work for some reason.. Here is the page setup:

I have 3 <span> tags:

Code:
<span id="carttotal"></span>
<span id="shipping"></span>
<span id="ordertotal"></span>

When A user clicks a radio button for their shipping method:

Code:
<input id='priority' onclick="updatetotal('priority')" type="radio" name="shipping" value="priority" />

I have a script that should insert the shipping total in to the <span>, which it does, but what I can not get it to do is to take that value, add it to the value in the 'carttotal' <span> and output this to the 'ordertotal' <span>.

Here is my script:

Code:
<script type="text/javascript">
function updatetotal(id)
{

[Code]....

The text in the 'ordertotal' <span> gets set to $NaN, and I have tried many other combinations and tricks, but I always get $NaN or undefined..

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function addRow(con,pos,tel,email)
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var td1 = document.createElement("TD");td1.appendChild(document.createTextNode(con));
var td2 = document.createElement("TD");td2.appendChild(document.createTextNode(pos));
var td3 = document.createElement("TD");td3.appendChild (document.createTextNode(tel));
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the output of this is
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if i put a span tags in the email side how would i do that in scripts
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