Undefined Value in Mozilla

We have a small store on our website. When an item is selected values are set in a PayPal form and then submitted to PayPal. I thought I had it working in IE, Safari and Mozilla, but when retesting this afternoon, I find I'm getting an error in Mozilla. Here is an item description:

      <div id="optionalText"></div>
      <div id="itemMain">
        <div id="itemName">White Lightning Flash Cap</div>
        <div id="itemImage"><img src="../../../assets/images/store/hats/lightCap.jpg" alt="White Lightning Flash Cap" width="226" height="151" /></div>
        <div id="itemDescription"><br />
          Unstructured, low profile, six panel, soft mesh, back cap. <br />
          <br />
          Padded sweatband. <br />
          <br />
          Adjustable self-fabric closure with sliding silver buckle. <br />
          <br />
          Color: putty/black.</div>
        <div id="itemAttributes">
          <div id="attribute">
          </div>
        </div>
      </div>
      <div id="order">
        <div id="itemOrder">
          <div id="costShip">
            <div id="price"> <strong>Price:</strong> $20.00 </div>
            <div id="shipping"> <strong>Shipping</strong>: $3.00 </div>
          </div>
          <div id="order">
            <div id="nbrItems">
              <label><strong>Quantity:</strong></span>
              <select name="quantity1" id="quantity1">
                <option value="1" selected="selected">1</option>
                <option value="2">2</option>
                <option value="3">3</option>
                <option value="4">4</option>
                <option value="5">5</option>
                <option value="6">6</option>
                <option value="7">7</option>
                <option value="8">8</option>
                <option value="9">9</option>
                <option value="10">10</option>
              </select>
              </label>
            </div>
            <div id="addtoCart">
              <input name="addCart1" type="submit" id="addCart1" onclick="MM_callJS('ppsubmit(\&quot;lightHat\&quot;)')" value="Add to Cart" />
            </div>
          </div>
        </div>
      </div>
Here is the validation code:

<script type="text/javascript" language="JavaScript">
var amtsave;
var shipsave;
var qtysave;

function ppsubmit(product)
{
      switch(product)
      {
      case "lightHat":
                        amtsave="20.00";
                        shipsave="3.00";
                        qtysave=quantity1.value;
                        document.paypalform.item_name.value="White Lightning Flash Cap";
      if (qtysave == "1")
            {
            document.paypalform.shipping.value=shipsave;
            document.paypalform.quantity.value=qtysave;
            }
            else
            {
             document.paypalform.shipping.value=shipsave*qtysave;
             document.paypalform.quantity.value=qtysave;
            }
            document.paypalform.amount.value=amtsave;
            document.paypalform.submit();
}
Mozilla is issuing an error saying "quantity1" is undefined. Any ideas how it wants a list/menu value defined?
slegyAsked:
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LordOfPortsCommented:
Try:

qtysave = document.getElementById('quantity1').value;

instead of:

qtysave=quantity1.value;
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slegyAuthor Commented:
It works great - thank you! One last question - this should be simple:

I'm trying to concatenate color, item description and size:
document.paypalform.item_name.value=document.getElementById('color1').value;+" Lightning Polo Shirt";
The "Lightning Polo Shirt" is being ignored. Any idea why?
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LordOfPortsCommented:
The semi-colon after .value should be removed, then it should work:
document.paypalform.item_name.value = document.getElementById('color1').value + " Lightning Polo Shirt";

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slegyAuthor Commented:
Everything is working great! Now we know why the store in the current site has never worked in Mozilla. Thank you so very much.
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