Add to cart button gone

Hello,

I'm trying to get Hikashop running on my Joomla 1.5 webshop.
I have made a lot of changes tonight and now suddenly my add to cart button is gone.
I have no idea how to get it back. Everywhere where i see an option display add to cart it's on i think.
Someone with a good idea???

Thanx! That did the trick!
Sometimes things are easier then you think.

Then another problem which is a bit more complex.
In Google Chrome and Firefox my layout looks very good, but when i open the site in Internet Explorer there are borders around all my pictures. All images that have a link (my products, even the printbutton in the checkout) have a border in IE. When i open the elements to inspect the code i see it just goes to my template layout.css.
I think it's this code or something close to it.
#main a:link,#main2 a:link,#main a:visited,#main2 a:visited {
color:#000;

I can't just adjust this because then my whole website gets changed and that isn't what i want.
But how and where can i put a code in Hikashop so that i dont get borders anywhere?

Thanx in advance!

Oh if everything was just this simple
thanx alot! this worked beautifull..