function chkForm()
{
	var iGuestName=document.xForm.GUEST_NAME
	var iGuestEmail=document.xForm.GUEST_EMAIL
	var iGuestInfo=document.xForm.GUEST_INFO

	if (iGuestName.value=="")
	{
		alert("请填写姓名！");
		iGuestName.focus();
		return false
	}

	if (iGuestEmail.value=="")
	{
		alert("请填写E-mail！");
		iGuestEmail.focus();
		return false
	}

	if (iGuestEmail.value.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/)==-1)
	{
		alert("请填写正确的E-mail地址，例如：xxx@hotmail.com");
		iGuestEmail.focus();
		return false
	}

	if (iGuestInfo.value=="")
	{
		alert("请填写留言内容！");
		iGuestInfo.focus();
		return false
	}

	return true;
}