function backtoTop() {
  var x1 = x2 = x3 = 0;
  var y1 = y2 = y3 = 0;
  if (document.documentElement) {
      x1 = document.documentElement.scrollLeft || 0;
      y1 = document.documentElement.scrollTop || 0;
  }
  if (document.body) {
      x2 = document.body.scrollLeft || 0;
      y2 = document.body.scrollTop || 0;
  }
  x3 = window.scrollX || 0;
  y3 = window.scrollY || 0;
  var x = Math.max(x1, Math.max(x2, x3));
  var y = Math.max(y1, Math.max(y2, y3));
  window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
  if (x > 0 || y > 0) {
      window.setTimeout("backtoTop()", 25);
  }
}

function openRegalInfo(loc) {
      var windowname ="openwindow";
      var Window = window.open(loc, windowname,'scrollbars=yes,directories=no,toolbar=no,location=no,status=no,menubar=no,width=720,height=600');
}

function openPrintCoupon() {
      var windowname ="openwindow";
      var Window = window.open('coupon.html', windowname,'scrollbars=yes,directories=no,toolbar=no,location=no,status=no,menubar=no,width=720,height=640');
}

function PrintPage(){
	if(document.getElementById || document.layers){
		window.print();
	}
}