function fixmargins ()
{
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
 
  if (myHeight < 600)
  {
  document.getElementById("background").style.top = (0-(myHeight/2))+'px';
  }
  else
  {
  document.getElementById("background").style.top = '-300px';
  }
  
  
  if (myWidth < 950)
  {
  document.getElementById("background").style.marginLeft = (0-(myWidth/2))+'px';
  }
  else
  {
  document.getElementById("background").style.marginLeft = '-475px';
  }
 
 }