Compass in ie 6 looks quite ugly (gif image with white borders). Make it like at live.com
<!--[if lt IE 7]>
<style>
#Compass { background-image:none !important; filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='http://maps.live.com/i/bin/1.3.20071005130843.55/NavAction/Pan_arrows_HL.png',sizingMethod='scale') !important;}
</style>
<![endif]-->