// JavaScript Document
function changeImg(name, img) {
  name.src = img;
}

function changeLayer(name) {
  v = name.style.visibility;
  v=(v=='visible')?'hidden':(v=='hidden')?'visible':v;
  name.style.visibility = v;

//  if (on==1) name.style.visibility = 'visible';
//  else name.style.visibility = 'hidden';
}

function hiddenAllLayer() {
  var i,args=hiddenAllLayer.arguments;

  for (i=0; i<(args.length); i++) {
    obj=args[i];
    obj.style.visibility = 'hidden';
  }
}

function printPage(url) {
  window.open(url,"event","width=615,height=750,menubar=yes,scrollbars=yes,resizable=no");
}

function checkReg() {
	form = document.reserveForm;

	if (form.name.value == "") {
		alert("姓名!");
		form.name.focus();
		return;
	}
	if (form.phone.value == "") {
		alert("联络地址!");
		form.phone.focus();
		return;
	}
	if (form.checkin_year.value == "" || form.checkin_month.value == "" || form.checkin_day.value == "") {
		alert("入住预定日!");
		form.checkin_year.focus();
		return;
	}
	if (form.start_year.value == "" || form.start_month.value == "" || form.start_day.value == "" ||
		form.end_year.value == "" || form.end_month.value == "" || form.end_day.value == "") {
		alert("契约时间!");
		form.start_year.focus();
		return;
	}

	form.submit();
}