title: My Selector select all elements, how select some one?
body: <p>Im making a litle script appear/desappear but my jquery element select all, i think if i make a unique class to all is very classes to use, i preffer one mode of use the <strong>$this</strong> of jquery but i dont know, my code is ruby on rails is this... :</p>
  
  <pre><code>&lt;%= link_to_function "Comentar","$(this(div #comment_form)).fadeIn();",:class =&gt; 'comentar' %&gt;
  </code></pre>
  
  <p>but select all the posts to appear the box of comment</p>
  
  <p>and my aplication.js to desappear of default:</p>
  
  <pre><code>$(document).ready(function(){
  
  $("div #comment_form").hide();
  
  });
  </code></pre>