This site continues to receive a large amount of traffic from people searching for a solution to achieving rounded corners in IE8. Clearly, it’s a hot topic, and my previous post about using DD_Roundies has hopefully helped developers along their way.
I recently had an issue with DD_Roundies where the border width was 1 pixel out. Not sure why, but it prompted me to look for another solution. A simple plea for help on twitter resulted in the discovery of another library, and this time one built as a jQuery plugin.
Check out cornerz. It’s easy to use and so far, works like a charm.

Finally a solution for IE8, but for me it doesn’t respect the background colors of parent containers so I am seeing rounded corners with the cut out parts being white instead of transparent or the parent’s background-color :( This makes the plugin useless for me. I am just about to give up on IE8.
@1008. Have you tried setting the background colour as one of the options?
e.g. $(‘.myclass’).cornerz( {
‘radius’ : 12,
‘corners’ : ‘bl’,
‘background’ : ‘#000′
} )
I had the same problem as 1001 Fonts.
It won’t work well with a background..
Setting the color doesn’t work because the background is an image not just a color.
Guess I’ll have to wait. There’s not good solution for rounded corners on IE8 today.
I was able to get DD_Roundies working in IE8 without the 1 pixel issue occurring by commenting out lines 226 to 232 – the if statement starting with):
if (DD_roundies.IE8) {