function callback()
{
	var fullname = document.ticket.fullname.value;
	var email = document.ticket.email.value;
	var phonenumber = document.ticket.phonenumber.value;
	var timezone = document.ticket.timezone.value;
	var time = document.ticket.time.value;
	var comments = document.ticket.comments.value;
	
	if (cTrim(comments, 0) == "")
	{	
		alert("Notice: Please let us know the comments.");
		return false;
	}else if(cTrim(phonenumber, 0) == "")
	{
		alert("Notice: Please let us know your phonenumber.");
		return false;
	}else{	
	
	var sendmsg = "Request a call back: " + phonenumber + "\n";
	sendmsg += "Full Name: " + fullname + "\n";
	sendmsg += "Email: " + email + "\n";
	sendmsg += "Phone Number: " + phonenumber  + "\n";
	sendmsg += "Time Zone: " + timezone + "\n";
	sendmsg += "The best time: " + time  + "\n";
	sendmsg += "Comments: " + comments  + "\n";
	document.ticket.message.value = sendmsg;
	document.ticket.submit();
	return true;
	}
}

//****************************************************************
// Description: sInputString 为输入字符串，iType为类型，分别为
// 0 - 去除前后空格; 1 - 去前导空格; 2 - 去尾部空格
//****************************************************************
function cTrim(sInputString,iType)
{
	var sTmpStr = ' '
	var i = -1
	
	if(iType == 0 || iType == 1)
	{
		while(sTmpStr == ' ')
		{
			++i
			sTmpStr = sInputString.substr(i,1)
		}
		sInputString = sInputString.substring(i)
	}
	
	if(iType == 0 || iType == 2)
	{
		sTmpStr = ' '
		i = sInputString.length
		while(sTmpStr == ' ')
		{
			--i
			sTmpStr = sInputString.substr(i,1)
		}
		sInputString = sInputString.substring(0,i+1)
	}
	return sInputString
}