title: Find actual viewport height - minus the chrome
body: <p>HI,</p>
  
  <p>Can anyone tell me how to get the actual viewport height? If i use  window.innerHeight or $(window).height() (jquery) I get back a value that looks like it's taking the browser chrome in to account. I need the height of the actual viewport. When I measure the viewport height using a ruler plugin in the web dev toolbar (firefox) the value is different than what the window.innerHeight provides me with.</p>