How can I make css support old versions of browsers [duplicate]

Question

This question already has answers here:

Closed 9 years ago.

Possible Duplicate:
How to make rounded border in IE8 with CSS?

I set this code for Border. I need to set rounded corners for this border.

This code works with E9, I need it to work in old browser like IE6, IE7, IE8

My code in CSS

 border-radius: 11px 11px;
 border:1px solid #373737;
 -webkit-border-radius: 11px;
 -moz-border-radius: 11px;

Answer 1

I suggest CSS3 PIE - http://css3pie.com/

PIE makes Internet Explorer 6-9 capable of rendering several of the most useful CSS3 decoration features.

Answer 2

There is no support of border-radius in older browsers, you got to use scripts such as CSS3Pie to get it working in them.

Be aware that in your CSS, you will have to use behaviour property which isn't valid and will cause your CSS not to validate against W3C Validator.