title: asp.net webforms + jquery = can't get button press
body: <p>wanted to include jquery in masterpage, but as soon as I did that - my login page stopped working... in chrome console I'm getting:</p>
  
  <pre><code>uncaught TypeError: Cannot read property 'onsubmit' of null
  </code></pre>
  
  <p>from stack I can see that it is here:</p>
  
  <pre><code>Sys.WebForms.PageRequestManager._initialize('ctl00$ScriptManager1', document.getElementById('aspnetForm'));
  </code></pre>
  
  <p>in firefox:</p>
  
  <pre><code>this._form is null
  this._onsubmit = this._form.onsubmit; 
  </code></pre>
  
  <p>and that error is in ScriptResource.axd?=...</p>
  
  <p>and this causes that I can't just click on the Login button - it does nothing... on the other hand - everything works in Opera... even better - if I am to remove:</p>
  
  <pre><code>&lt;script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.5.min.js" type="text/javascript" /&gt;      
  </code></pre>
  
  <p>then everything works fine (tried also other versions of jquery)... now the best is that other pages - that also have buttons and events, work... I've even changed the login page not to use Login control... and it still doesn't work... I'm really confused right now...</p>