Cross Browser RGBa Support
Yet another very nice feature, that gives to us the CSS3 specification, is the RGBa (stands for Red Green Blue Alpha) property. RGBa is used to create a semi-transparent background of some HTML element.
As well as other CSS3 properties, (like box-shadow, border-radius), all the modern browsers (FireFox, Safari, Chrome, Opera) excellent supports the RGBa property, but only not Internet Explorer.
However, there is a simple way to make cross browser RGBa support, i.e. even in IE, moreover in all popular versions: IE6, IE7 and IE8.


