title: Tab-like keyboard navigation with plus sign in HTML form
body: <p>I have a .NET WebForms page with Telerik UI for ASP.NET AJAX with an HTML form.</p>
  
  <ul>
  <li>The tab key navigates through fields on the form as expected. If the field has default contents, they are selected on focus to make it easier to change.</li>
  <li>The plus sign key also navigates through the fields via some custom javascript (see below) on the form; however, when navigating with the plus sign into a field with a default value, the default value is not highlighted on first focus right after page load. If I plus back into it again for a second time after page load, though, the default contents are highlighted as expected.</li>
  </ul>
  
  <p>What do I need to tweak to cause existing default contents of a field to be highlighted on focus with the plus sign key?</p>
  
  <pre><code>function handlePlusKey(event) {
      if (event.keyCode == 107) {
          var control = this;
          var found = false;
          $(tabTypes).each(function (i) {
              if (this.className.indexOf('rtsLink') == -1
                      &amp;&amp; this.id.indexOf('InitInsertButton') == -1
                      &amp;&amp; this.title != "Click here to sort"
                      &amp;&amp; this.tabIndex &gt; -1
                      &amp;&amp; $(this).is(":visible")
                      &amp;&amp; !$(this).is(":disabled"))
                  if (this == control) {
                      found = true;
                  }
                  else if (found) {
                      this.focus();
                      found = false;
                  }
          });
          event.preventDefault();
      }
  }
  </code></pre>