title: Scrolling need to work on only ion-content
body: <p>I am developing Cordova application using ionic framework and i facing below issue.</p>
  
  <p>I have  in  and  on page.</p>
  
  <p>I want to just set scroll top of  on button click. i had already done that but  is also setting to top on button click.</p>
  
  <p>I want to scroll only  to top and  should maintain it scroll position.</p>
  
  <p>How can i do that?</p>
  
  <p>Here is my structure of my page.</p>
  
  <pre><code>&lt;ion-view&gt;
      &lt;ion-header-bar class="bar-subheader" &gt;
           &lt;ion-scroll direction="x"  scrollbar-x="false"&gt;
               &lt;button&gt;1&lt;/button&gt;
               &lt;button&gt;2&lt;/button&gt;
           &lt;/ion-scroll&gt;
     &lt;ion-header-bar&gt;
     &lt;ion-content&gt;
    &lt;/ion-content&gt;
  &lt;/ion-view&gt;
  </code></pre>
  
  <p> has buttons arranged horizontally. When i click any of them then  and  scroll to starting position.</p>
  
  <p>I want only scroll to top on any button click.</p>