Anyone found a way to change the gradiant color dynamically?

Such a style:

TABLE.UserHead
{
   border: solid 1px;
   border-style: inset;
   Padding: 2px;
   Background: #C7CDBA;
}

Can be easily updated, as per its background color, anytime, by refreshing dynamically the background property of the table UserHead style. However, when you have this:

TABLE.UserHead
{
   border: solid 1px;
   border-style: inset;
   Padding: 2px;
   Background: #C7CDBA;
   filter:progid:DXImageTransform.Microsoft.Gradient
    (GradientType=1,StartColorStr=#C7CDBA,EndColorStr=#D7DBCE)
}

How do you do it?