title: insert element afer document.formName.name with jQuery
body: <p>So i have:</p>
  
  <pre><code>&lt;form name='formName'&gt;
    &lt;input name='name' value='Name'/&gt;
   &lt;/form&gt;
  </code></pre>
  
  <p>And:</p>
  
  <pre><code>if (document.formName.name.value == "Name")
   {
  $(document.formName.name).after("&lt;p&gt;Please enter name!&lt;/p&gt;");
   }
  </code></pre>
  
  <p>However, it seems jQuery doesn't select it.</p>
  
  <p>I know there are nice validation plugins, but I'd like to write my own a simple as possible
  I don't need to regex the values, just check if there is something filled in before you can send..</p>
  
  <p>I also don't want to put in DIV's after the form field, because I have multiple forms on the same page, and want to select it per form..</p>