function checkBrowserHeight(){
  var theHeight = getBrowserHeight();
  if (theHeight > 691) {
    setStylesheet("full");
  }
  else {
    setStylesheet("small");
  }
  return true;
}

function getBrowserHeight(){
  if (window.innerHeight) {
    return window.innerHeight;
  }
  else if (document.documentElement && document.documentElement.clientHeight != 0) {
    return document.documentElement.clientHeight;
  }
  else if (document.body) {
    return document.body.clientHeight;
  }
  return 0;
}

function setStylesheet(styleTitle){
  var currTag;
  if (document.getElementsByTagName) {
    for (var i = 0; (currTag = document.getElementsByTagName("link")[i]); i++) {
      if (currTag.getAttribute("rel").indexOf("style") != -1 && currTag.getAttribute("title")) {
        currTag.disabled = true;
        if(currTag.getAttribute("title") == styleTitle) {
          currTag.disabled = false;
        }
      }
    }
  }
  return true;
}