Changing a image with a value

Hi

I'm trying to create some code for an HTML web page which will work as follows:-

Current Value's on web page:
{stock} - this can be 100-0
{addtoorder} - this is the buy button

I'm trying to say the following:

If {stock} = 0 change the {addtoorder} (Buy Button) to a gif called nostock.gif
else let it be the {addtoorder} (Buy Button)

I've tried various things but I just cant get it to work, any help would be much appriciated.

Where are 'stock' and 'addtoorder' stored. Where are they coming from?

The values come from a shopping cart called Evolve which runs ASP and Java.

If you place the values with the {} marks it displays the number of stock items or displays a Buy button depending which value you use.

What I'm trying to do is when the stock = 0 change the default Buy button to a gif which displays Out of Stock.

You would need a server language to do this. You would write a script which would check the stock level before loading the page. If the value = 0, then you'd insert an IMG tag, else, print the amount.

I would've thought that the package you're using would have some kind of facility for this?

Nope not at a product level, only when you buy the item and go to pay for it, it then reports the item is out of stock.

I want it so when you look at a product it has Buy or Out of Stock. I've been given a price of £600 to add the above.

600 pounds sounds ridiculous.

What language is the package wrriten in? - myself, or someone else on this board might be able to take a look @ it for you.