HTML - Add Variables To Paypal Add To Cart Button

with a software i created a webshop but the basket system goes to their own paysystem an i want to sent it to paypal.

I attached the original html form.

I found out that the function post_bsk does the job.

function post_bsk(pf){
if(core.active_servers.length==0&&!tf.isSafari){setTimeout('post_bsk(d.forms["'+pf.name+'"])',100);return;}
var cgis=core.active_servers;
if(!cgis||cgis.length==0)cgis=['www.globecharge.com/webshop/'];

pf.basket.value = tf.xml_basket;
pf.regions.value= tf.xml_regions;


pf.action='https://'+cgis[0]+'shoporder.cgi';


if(tf.isSafari)setTimeout('d.forms["'+pf.name+'"].submit()',500);
else pf.submit();

if(window.scrollTo)window.scrollTo(0,0);
var gwcontent=gl('Content'),gwlen=gwcontent.childNodes.length;
for(var n=0;n<gwlen;++n){
var el=gwcontent.childNodes[n];
if(el.id=='gwframe'||!el.style)continue;
el.style.display='none';
}
gl('gwframe').style.display='block';
if(tf.isSafari)gl('gwframe').style.opacity=1;// Safari 3.1.2 doesn't show text when opacity is lowered. AIT type of themes will be affected by this.
tf.mfh('WebSiteContent');
}

Can you help me please?
Thank you

I am not sure where to post this but here goes.

I am trying to find a way to use javascript (I no nothing about this) to pass to our PayPal shopping cart the right shipping and handling charge. I was told that javascript would be able to help?

We are selling 3 things that all have a different price and different shipping charge. The shopping cart works if someone purchases just one item but if someone purchases multiple different items we are charging too much shipping and handling.

What I would like to do is take the maximum charge of the items chosen and only charge that amount. One problem I may have is different sizes of the same item seem to take on it's own shipping and handling charge for each size.

Here is an extract of my PayPal Shopping Cart html....

First Item For Sale:

<input type="hidden" name="add" value="1">
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="business" value="abc@123.com">
<input type="hidden" name="item_name" value="2008 Calendar">
<input type="hidden" name="amount" value="16.95">
<input type="hidden" name="shipping" value="10.00">
<input type="hidden" name="shipping2" value="2.00">
<input type="hidden" name="tax" value="1.02"><!-- this is 6% tax GST + no PST on $16.95 -->
<input type="hidden" name="buyer_credit_promo_code" value="">
<input type="hidden" name="buyer_credit_product_category" value="">
<input type="hidden" name="buyer_credit_shipping_method" value="">
<input type="hidden" name="buyer_credit_user_address_change" value="">
<input type="hidden" name="no_shipping" value="0">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="currency_code" value="CAD">
<input type="hidden" name="lc" value="CA">
<input type="hidden" name="bn" value="PP-ShopCartBF">

Second Item For Sale:

<input type="hidden" name="add" value="1">
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="business" value="abc@123.com">
<input type="hidden" name="item_name" value="OPC Magazine - Issue # 2">
<input type="hidden" name="amount" value="9.99">
<input type="hidden" name="shipping" value="2.00">
<input type="hidden" name="shipping2" value="1.00">
<input type="hidden" name="tax" value="0.00"><!-- no taxes on magazines -->
<input type="hidden" name="buyer_credit_promo_code" value="">
<input type="hidden" name="buyer_credit_product_category" value="">
<input type="hidden" name="buyer_credit_shipping_method" value="">
<input type="hidden" name="buyer_credit_user_address_change" value="">
<input type="hidden" name="no_shipping" value="0">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="currency_code" value="CAD">
<input type="hidden" name="lc" value="CA">
<input type="hidden" name="bn" value="PP-ShopCartBF">


Third Item For Sale - Contains 4 different sizes to choose from:

<td><input type="hidden" name="on0" value="Size">
<strong>Size</strong></td>
<td><select name="os0">
<option value="Medium">(M) Medium
<option value="Large">(L) Large
<option value="Extra Large">(XL) Extra Large
<option value="Extra Extra Large">(XXL) Extra Extra Large</select>
</td>
</tr>
<tr>
<td><input type="hidden" name="on1" value="Colour">
<strong>Colour </strong></td>
<td><select name="os1">
<option value="Navy Blue">Navy Blue</select> </td>
</tr>
</table>
<p>
<input type="image" src="https://www.paypal.com//en_US/i/btn/sc-but-03.gif" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!">
<img alt="" border="0" src="https://www.paypal.com/en_US/i/scr/pixel.gif" width="1" height="1">
<input type="hidden" name="add" value="1">
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="business" value="abc@123.com">
<input type="hidden" name="item_name" value="OPC Golf Shirt">
<input type="hidden" name="amount" value="19.99">
<input type="hidden" name="shipping" value="11.00">
<input type="hidden" name="shipping2" value="5.00">
<input type="hidden" name="tax" value="2.80"><!-- this is 6% tax GST + 8% PST on $19.99 -->
<input type="hidden" name="buyer_credit_promo_code" value="">
<input type="hidden" name="buyer_credit_product_category" value="">
<input type="hidden" name="buyer_credit_shipping_method" value="">
<input type="hidden" name="buyer_credit_user_address_change" value="">
<input type="hidden" name="no_shipping" value="0">
<input type="hidden" name="return" value="http://www.outdoorphotographycanada.com/storethankyou.html">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="currency_code" value="CAD">
<input type="hidden" name="lc" value="CA">
<input type="hidden" name="bn" value="PP-ShopCartBF">

Thank you in advance for any assistance you can provide.

Dave.

I have a paypal shopping cart here. However the first add to shopping cart button under the text Sparky and the Magic Garden, does not work. I've isolated the problem to this: There is no form tag around this button where as in the other buttons the form tag is there. I spotted this by looking at it in firebug. However the strange thing is is that when I look at the code in the view source then the first button is surrounded by a form tag. as in all the other buttons. This site needs to go live this Monday so if anyone could offer some advice I would be extremely grateful.

Hey guys..

im building a website. www.lucymason.com.au and on the site i have a button that links to a paypal page that lets the user buy her CD.
The page was fine until i embeded the code paypal gave me for linking the button. after i done this my page formatting when crazy!
well its fine in firefox but not in safari and explorer.

If any one has any ideas, im really desperate!
thanks!