I confirm that the “Search” button’s title is not localised. Another problem is the height of “Search” text field : the height is correct in Firefox, but incorrect in Safari and Internet Explorer. To solve this, I replaced the following lines in “style.css” :
input, textarea {
padding: 6px 8px;
.s {
height: 18px;
with :
input, textarea {
padding-left: 8px;
.s {
height: 32px;