title: jQuery // var theHeight = window height minus 50px?
body: <p>I am getting the window height like this:</p>
  
  <pre><code>var theHeight = "innerHeight" in window 
                 ? window.innerHeight
                 : document.documentElement.offsetHeight; 
  </code></pre>
  
  <p>I need a var that is theHeight minus 50px</p>
  
  <p>How do I get that?</p>
  
  <p>Thanks!</p>