Quick Search out of alignment

[bowers01 +]

Hi,
On my site http://www.truckandmachinery.com.au the quick search at the top is not in align, if i hover over the bottom half it just stays the cursor, but the top half works. This only happens in IE.
I seen a tread earlier saying to add .qs input { margin: 0px; padding: 0px; } to the style sheet, i just added it at the end and it didnt work. Is there a certain spot to add it to?
Or is it somthing else causing it?
Cheers