Highlight search results

Hi!
I have a search function here,where it will capture every keypress in the textbox and produce the results immediately in gridview (live search).

Now i m having problem to highlight the search results in the gridview.
Lets say, i type goo in the textbox,google name will appear in gridview and only the word goo will be highlighted in the gridview.

Now,when i type the keyword in the textbox, the it will highlight the matching word but the word highlight will dissapeared.

Here is my aspx code :

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="HighlightTest1._Default" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<%@ Register Assembly="RealTimeSearch" Namespace="RealTimeSearch" TagPrefix="cc1" %>





   
   
   
 



   

   

        

   

   

       
       
      
      

                runat="server">
        
                            TargetId="searchText" />
       
        
                    AssociatedUpdatePanelID="UpdatePanel1">
  
                            TargetId="Gridview1" />
       
       

       

---

       
           

               

                                    DataKeyNames="Company_Name" DataSourceID="SqlDataSource1" CellPadding="4"
                    ForeColor="#333333" GridLines="None">
                   
                   
                                                    ReadOnly="True" SortExpression="Company_Name" />
                                                    SortExpression="Phone_1" />
                       
                                                    SortExpression="Sales_Agent" />
                                                    SortExpression="Email_Address" />
                   
                   
                   
                   
                   
                   
                   
               
               

                                    ConnectionString="<%$ ConnectionStrings:C:\PROGRAM FILES\MICROSOFT SQL SERVER\MSSQL.1\MSSQL\DATA\DATABASE1.MDFConnectionString %>"
                    SelectCommand="SELECT * FROM [Table1] WHERE ([Company_Name] LIKE '%' + @Company_Name + '%')">
                   
                                                    PropertyName="Text" Type="String" />
                   
               
               
           
       
       


       



could anyone see any errors in this code?
any suggestion/modification to the code?