title: Change font size of text under div
body: <p>How can i change the size of text under a div element ?</p>
  
  <p><a href="http://jsfiddle.net/giannisf19/v1tu3g62/" rel="nofollow">JS Fiddle</a></p>
  
  <pre><code>$(document).keydown(function (ev){
      if (ev.which == 75 &amp;&amp; $("#glass").hasClass("glass"))
      {
          $("#glass").removeClass("glass");
      }
  
      else if (ev.which == 75 &amp;&amp; !$("#glass").hasClass("glass"))
      {
          $("#glass").addClass("glass");
      }
  
  })
  
  $(document).ready( function() {
  
      $("#glass").addClass("glass");
  
      $(document).mousemove(function (event) {
              $("#glass").css({
                  left: event.pageX,
                  top:  event.pageY,
              });
  
          $("#divX").text(event.pageX);
          $("#divY").text(event.pageY);
  
      });
  });
  </code></pre>
  
  <p>Everything under div with red border must be changed. How can i approach this problem ?</p>