Hi All,

i am using two frames in a page. Mainframe have a page with text box to get input and gives the result url.

Needs:

1. I want to show this page in the topframe.

2. I want to set focus to the text box control in the mainframe always. using the following code but giving null error.

   parent.frames['mainFrame'].document.getElementById('form1:txtbox').focus();

   <frameset rows="550,0" cols="1008" frameborder="NO" border="0" framespacing="0">  
    <frame src="" id="topFrame" target="topFrame" runat="server"  scrolling="no"></frame>
    <frame src="Search.aspx" runat="server" id="mainFrame"></frame>     
   </frameset>