function screensize(pa)
{
  var he = document.documentElement.clientHeight;
  var wi = document.documentElement.clientWidth;
  
  var width;
  var height;

  if(wi >= 1000 || he >= 718){
    width="1000";
    height="718";
    document.getElementById('fla').style.backgroundImage='url(img/hg_start.jpg)';       
  }
  if(wi < 1000 || he < 718){
    width="850";
    height="611";
    document.getElementById('fla').style.backgroundImage='url(img/hg_start_sm.jpg)';
  }
  if(pa=="wi"){
    var screen = width;
  }else if(pa="he"){
    var screen = height;
  }  
  return screen;
}