<script type="text/javascript">
function addstyle()
{
    var sColor = dlgHelper.ChooseColorDlg();
    sColor = sColor.toString(16);
    sColor = (sColor.length==6)?"#"+sColor.toUpperCase():"#"+(new Array(6-sColor.length+1).join("0"))+sColor.toUpperCase();
    alert(sColor);
}
</script>

<object id="dlgHelper" classid="clsid:3050f819-98b5-11cf-bb82-00aa00bdce0b" width="0px" height="0px"></object>
<input id="btn" type="button" value="style" onclick="addstyle()" />