title: ASP.NET AJAX.BeginForm sends multiple requests
body: <p>Im relatevely new with Asp.net MVC3, </p>
  
  <p>I have a form handled with  Ajax, like this:</p>
  
  <p>@using (Ajax.BeginForm("dtjson", new AjaxOptions { HttpMethod = "Post", UpdateTargetId = "detalle_tarifa", OnSuccess = "exito2", OnBegin="bloquear" }))</p>
  
  <p>My problem is that when I submit data, it sends the request twice.</p>
  
  <p>Lets take a look at the view.</p>
  
  <p>This is the form:</p>
  
  <p><img src="https://i.stack.imgur.com/ZHNTz.png" alt="enter image description here"></p>
  
  <p>ok, now the view after submit:</p>
  
  <p><img src="https://i.stack.imgur.com/QaiO9.png" alt="enter image description here"></p>
  
  <p>And this one is to show firebug debugging:</p>
  
  <p><img src="https://i.stack.imgur.com/iEZZO.jpg" alt="enter image description here"></p>
  
  <p>On the layout, I have those javascript files..</p>
  
  
  
  <pre><code>   &lt;script src="@Url.Content("~/Scripts/jquery-ui.js")" type="text/javascript"&gt;&lt;/script&gt;
      &lt;script src="@Url.Content("~/Scripts/jquery.windows-engine.js")" type="text/javascript"&gt;&lt;/script&gt;
         &lt;script src="@Url.Content("~/Scripts/jquery.jqDock.js")" type="text/javascript"&gt;&lt;/script&gt;
         &lt;script src="@Url.Content("~/Scripts/jquery.jqDock.min.js")" type="text/javascript"&gt;&lt;/script&gt;
         &lt;script src="@Url.Content("~/Scripts/jquery.tablePagination.0.4.js")" type="text/javascript"&gt;&lt;/script&gt;
         &lt;script src="@Url.Content("~/Scripts/jquery.tools.min.js")" type="text/javascript"&gt;&lt;/script&gt;
         &lt;script src="@Url.Content("~/Scripts/jquery.cookie.js")" type="text/javascript"&gt;&lt;/script&gt;
         &lt;script src="@Url.Content("~/Scripts/jquery.treeview.js")" type="text/javascript"&gt;&lt;/script&gt;
         &lt;script src="@Url.Content("~/Scripts/jquery.treeview.edit.js")" type="text/javascript"&gt;&lt;/script&gt;
          &lt;script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>And on the view (A Partial View), I have this:</p>
  
  <pre><code>&lt;script src="@Url.Content("~/Scripts/jquery-1.4.4.js")" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="@Url.Content("~/Scripts/jquery-ui.js")" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script type="text/javascript" src=@Url.Content("~/Content/tinymce/jscripts/tiny_mce/jquery.tinymce.js")&gt;&lt;/script&gt;
  &lt;script type="text/javascript" src=@Url.Content("~/Content/tinymce/jscripts/tiny_mce/tiny_mce.js")&gt;&lt;/script&gt;
  &lt;script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="@Href("~/Scripts/jquery.uploadify.js")" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="@Href("~/Scripts/jquery.scrollTo.js")" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="@Href("~/Scripts/jquery.blockUI.js")" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="@Url.Content("~/Scripts/jquery.validate.js")" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="/Scripts/jquery.cookie.js" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="/Scripts/jquery.treeview.js" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="/Scripts/jquery.treeview.edit.js" type="text/javascript"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>It seems like it's a problem with jquery... but Im not sure of it...</p>
  
  <p>Any help would be great, Thanks everybody!</p>