title: __doPostBack is not defined
body: <p>Im getting that error when try to call a __doPostBack on one of my pages, every page that i have in the project use __doPostBack function but in this particular page im getting that Javascript error.</p>
  
  <p>i was looking in the internet and the only thing i read is that this error happends when i have a unclose  tag but i review the site and its ok.</p>
  
  <p>Error: __doPostBack is not defined
  Source File: htt://localhost:99/ProjectName/Disable.aspx
  Line: 1</p>