Why use `filter` if you don’t support modern browsers anyway?

Created by: mathiasbynens

From the gradients section:

filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",@startColor,@endColor)); // IE6 & IE7

On the other hand, if you do want this to work in IE6 and IE7, you could just drop the -ms-filter declaration, as filter works in any IE6+.