AutoCompleteExtender not working.

[askaquest]

Hello,
I am using AutoCompleteExt ender.The program Run without any errors.But It doesn't show suggestions bellow the textBox.
My aspx page is as follows:

[CODE=html] <form id="form1" runat="server">
<asp:ScriptMana ger ID="ScriptManag er1" runat="server" />
<asp:TextBox ID="myTextBox" runat="server" ></asp:TextBox>
<cc1:AutoComple teExtender
runat="server"
Enabled="True"
ID="autoComplet e1"
TargetControlID ="myTextBox"
ServiceMethod=" GetCompletionLi st"
ServicePath="Au toComplete.asmx "
MinimumPrefixLe ngth="1"
EnableCaching=" true"
CompletionSetCo unt="2"
CompletionListC ssClass="autoco mplete_completi onListElement"
CompletionListI temCssClass="au tocomplete_list Item"
CompletionListH ighlightedItemC ssClass="autoco mplete_highligh tedListItem"
DelimiterCharac ters=";, :">
</cc1:AutoComplet eExtender>
</form>
[/CODE]
and my webmethod as follows:

[CODE=java] [System.Web.Serv ices.WebMethod]
[System.Web.Scri pt.Services.Scr iptMethod]
public string[] GetCompletionLi st(string prefixText, int count)
{
string[] names = {"AzamSharp","S cott","Alex","M ary","John","Al i","Sam","Sammy ",
"Sandy","Michea l","Andy","Pete ","Steve","Bill "};

return names;

}
[/CODE]
I am not getting where is the problem?
So pls guid me for this problem
Thanks in advance.
Regards,
askaquest