Dynamic Textbox has no ID tag

 Hello,
   I have made a custom control that derives from a listbox and has a textbox as a child control, i dynamically generate this textbox in the overridden RenderControls. heres the output...
 
<input name="ctl03" type="text" value="0;1;2;3;4;5;6;7;8;9" /> I also want to be able to change that name to something else also. I need the ID tag so that in my javascript i can do the getElementById()
 
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