Dynamically adding content to page outside of the aspnet form from within a UC

I have a uc which generates a html form  that should auto-submit when the browser loads the page, so I need to add the form to the page before the </body> tag - outside the asp.net form, id like my UC to work without having any requirements on its parent page / masterpage.

i have managed to add a literal inside the body tag by calling the following inside CreateChildControls on the parent page
Me.Form.Parent.Controls.AddAt(0, ltl)
however this required the body to have runat="server" and the code to be added to the user control's parent page. ( this also seems to cause the viewstate to be lost after postback)

Is there any way i can append the string to the rendered html inside the body but outside the <form></form> from within the UC code
Incase it makes a difference the UC is being added dynamically to the page.

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