There is a simple way for creating cross-browser box-shadow in all modern and popular browsers including Internet Explorer (Opera only since 10.50 pre-alpha version). The essence of the solution is very similar to cross-browser border-radius, it also uses VML and behaviour.
Currently there are multiple variations for creating a HTML elements with rounded corners. The simplest of these is the method that uses CSS3.
Fortunately almost all modern browser (FireFox, Safari, Chrome and Opera since 10.50 pre-alpha) supports CSS3 border-radius, but unfortunately none of a versions of Internet Explorer (even IE8) does not support this property.
I very long time was waiting for a moment, when I can safely use the border-radius property on my sites. And this moment has finally has come – now we can make rounded corners in Internet Explorer with his means.
I very like an idea of display a different design of the same site for IE6 users (may be even for IE7 and IE8 users) and for users of other popular browsers.
The reason is in ability of using CSS3 technology by the full, because the browsers like Opera, FireFox, Chrome and Safari already supports a lot of opportunities of this technology, they updates frequently, and we, web developers, very much want to use them on our web sites. Right? =)