Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. 

Parser Error Message: The 'BorderWidth' property cannot be set declaratively.

Source Error: 

Line 99: 					<td align="center" width="450">
Line 100:					    <!-- UltraChart1 -->
Line 101:                        <igchart:UltraChart ID="UltraChart1" runat="server" Width="430px" 
Line 102:                            Height="250px" BorderStyle="None" BorderWidth="0px" BackgroundImageFileName="" 
Line 103:                            BorderColor="Black" 

Source File:     Line: 101 

It only occurs in certain condition i i removed all the borderwidth attributes from the aspx page  i dont understand what is the problem   can you help me out?..............