function CheckMail()
{
    var index = document.form;

    if (index.info.value == "")
	{
	    alert ("请填写内容!");
		index.info.focus();
		return false;
	}
	if (index.contact.value == "")
	{
	    alert ("请填写联系人!");
		index.contact.focus();
		return false;
	}
	if (index.areacode.value == "")
	{
	    alert ("请填写电话号码区号!");
		index.areacode.focus();
		return false;
	}
	if (index.tel.value == "")
	{
	    alert ("请填写电话号码!");
		index.tel.focus();
		return false;
	}
    if (index.mail.value == "")
	{
	    alert ("请填写收件人!");
		index.mail.focus();
		return false;
	}
	if(index.mail.value.indexOf("@") == -1)
    {
       alert("E-mail格式不正确，应如：abc@abc.com！");
       index.mail.focus();
       return false;
    }

   return true;
}