Different product list/spot depending on product tree used.

Javascript and the open fields...I have done this method with one of my sites.

Add some text into OpenField5 (or any other number you decide) ie type1

In the Product List page add the code;

<script type="javascript/text">
if ($product_open_field5$ == "type1" )
{
document.write ("Create all your text here if OpenField equals 'type1'")
}
Else
{
document.write ("Create all your text here if OpenField does not equal 'type1'")
}
</script>

Be aware that you will not be allowed to use any of the variables that utilise " (quotes) as it will generate errors in the "document.write" lines, ie $product_add_action$ & $product_picture#$ so you will need to create the code yourself.

To get around this, I've added the item code in a product_open_field, this is not the item code that you generate but the automatic number that is created.

You can find the number by going to Products --> Products --> Products within the admin menu.
Expand your product tree to display the products to the right.
When you hover your mouse over the title it will display "javascript:modifyProduct('437', 1, 0);" on the status bar.
In this example "437" is the unique code
Modify the product to add this number to an OpenField, say #6 and use the following code to create the "Add to cart" button...

document.write ("<input src='AddToCartImage' value='' class='ProductAddButton' name='add$product_open_field6$' type='image'><a name='$product_code$'></a>")

You just need to edit;
src='AddToCartImage' - to point to your button image
name='add$product_open_field6$' - to point to your open field to include the auto generated code (remember the "add" word before the OpenField variable)

The above parameter will then display;
name='add437'
...using the example number of 437 from above.

This is useful to show a different Add To Cart button if the item is out of stock like I have on one of my sites