Get window width and height, get from http://www.geekpedia.com/code100_Get-window-width-and-height.html

getWindowWidthOrHight.js

function GetWidth()
{
  var x = 0;
  if (self.innerHeight)
  {
    x = self.innerWidth;
  }
  else if (document.documentElement && document.documentElement.clientHeight)
  {
    x = document.documentElement.clientWidth;
  }
  else if (document.body)
  {
    x = document.body.clientWidth;
  }
  return x;
}
 
function GetHeight()
{
  var y = 0;
  if (self.innerHeight)
  {
    y = self.innerHeight;
  }
  else if (document.documentElement && document.documentElement.clientHeight)
  {
    y = document.documentElement.clientHeight;
  }
  else if (document.body)
  {
    y = document.body.clientHeight;
  }
  return y;
}