Ok... here is the deal... you need to remove the quote symbol that you have in your descriptions. Instead replace it with word
inch or
in. What is happening is that by using the double quote character to represent inches, you are throwning off the HTML code.
For instance take the code that displays the image
Code:
[img]../image.php?productid=2[/img]
See.. it is actually thinking that you are closing the alt property after the number 11. Then you have an open quote later before you close the tag. This is really screwing up your HTML. For some reason the double quote is not getting translated to the " equivelant. So, the easiest thing to do is remove the " from the title and descriptions and replace it with the word.
Take a look at this product
http://www.saddlemen.com/test_site/xcart/customer/product.php?productid=4&cat=455&page=1 and you will see that it is fine there. No quotes.