1. At the very beginning of work don’t forget about original prefix for tables in DB.
2. Check all site pages in IE 7
3. Make sure, that admin with limited rights is developed for client, ant that this admin has enough rights for content editing.

1. Cross browser testing
Site should work fine in IE6-8, FF3+, Opera9+, Safari4+, Chrome4+
2. Always define background colour for body even if it’s white.
3. If you use css hacks comment them, or better use css_browser_selector.js. Remember about layout designers, that will work with this layout afterwards.

.someclass     {
      opacity: 0.3;
      filter: alpha(opacity=30); /* for IE */
}
   

Peculiarities of e-payment system functioning in Demo mode. Use value 1 as order number In Demo mode even if in post request correct order number is set. In this case MD5 hash is generated right. By the way, it’s not implemented in current module 2checkout of Ubercart.