c# - How to use simple form Nested in a FORM who runs at server Asp.net -

i've applied master page existing application.master page has form control runs @ server . page have multiple forms in forms runs @ server , doesn't runs @ server . how can handle situation :

master page :

 <form id="form1" runat="server">  <asp:contentplaceholder id="contentplaceholder1" runat="server">                             </asp:contentplaceholder> </form> 

content page :

<asp:content id="content1" contentplaceholderid="contentplaceholder1" runat="server"> <form action="versioncontrol_11g.aspx" name="form1" id="form1" > ... </form>    <form runat="server" enctype="multipart/form-data" method="post" > ... </form> <form action="versioncontrol_11g.aspx"  name="form2" id="form2"> ... </form>   <form runat=server > ... </form> </asp:content> 

i have tried closing form tag in begining of content page again opened form tag required in content page more 1 form runat=server attribute not allowed .

i want way use simple forms without runat server attribute nested inside form exists in master page .

as due huge functionality of page , can not modify overall structure of page.

please me :(

thanks