function SizeS(v){
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  }
  else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  }
  else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  if(v)	return myWidth;
  else 	return myHeight;
}
function ZoomS(){
	var e = document.getElementById("Commercial");
	var heighter = 0;
	if ((SizeS(false)-e.offsetHeight) > 0){
		heighter = (SizeS(false)-e.offsetHeight)/2;
	}
	e.style.marginTop = heighter + "px";
}