Just to warn you guys, don't use PNG files in webpages from now on... I had the images for the menu on my website saved as PNG files. It matched with the page background colour perfectly in Opera and FireFox. However, when viewed in IE, the menu looked darker than the page! It turns out (after lots of faffing about), that the new IE has some 'gamma correction' for PNG files that is supposed to make images blend with the page background better (apparently it is hard to get them the same colour!). Well I found it fuked it up instead. I could change the shade to try and make it appear correctly in IE, but it just applied even more gamma correction and F***ed it up again. Solution was to re-save all PNG files as JPG and do a find and replace for PNG with JPG in my HTML files.