Your #headerSearch div has the width set to 460px in the stylesheet, and the main input (where you type your search query) has the width set to 400px....some space is taken by "hidden" inputs so that when you increase the size of the button it cannot sit side by side inside the div forcing it to the next line lol
Either increase the width of the div styling or decrease the width of the input field...and you *should* be set lol
Hmmm lol I should learn to read properly lol I see you were talking about reducing the size...either option I posted above should still work still though as it did in Firebug on my Firefox *cross fingers*




