function getScreenWidth()
{
  var frameWidth;
  if(self.innerWidth)
  {
    frameWidth=self.innerWidth;
  }
  else if(document.documentElement&&document.documentElement.clientWidth)
  {
    frameWidth=document.documentElement.clientWidth;
  }
  else if(document.body)
  {
    frameWidth=document.body.clientWidth;
  }
  
  return frameWidth;
}

function getScreenHeight()
{
  var frameHeight;
  if(self.innerHeight)
  {
    frameHeight=self.innerHeight;
  }
  else if(document.documentElement&&document.documentElement.clientHeight)
  {
    frameHeight=document.documentElement.clientHeight;
  }
  else if(document.body)
  {
    frameHeight=document.body.clientHeight;
  }
  
  return frameHeight;
}

function fixDiv( divId, offSet ){
  
  var thisYScrollPos = 0;
  if(window.pageYOffset) thisYScrollPos = window.pageYOffset;
  else if(document.documentElement.scrollTop) thisYScrollPos = document.documentElement.scrollTop;
  else if(document.body.scrollTop) thisYScrollPos = document.body.scrollTop;
  
  document.getElementById(divId).style.top = (thisYScrollPos+offSet)+'px';
  
}