Setting column header width in grid object

hi
how to set the width of the column header .Is there any other property in the grid object

Thanks & Regards,
Arun

This works great for the Column Cell Data, but if you are setting the width for the cell Column0.setStyle("width", "100px");. How do you set the width for the Header to match on the fly(dynamic) other than

<style>
.active-column-0 {
width: 100px;
color: #000099;
background: #ffffcc;
text-align: right;
font-weight: bold;
}
</style>
???