
<!-- 

function IsNumeric(sText)

{
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
   }

function checkForm(form_id, email_id, name_id, phone_id, div_id){
var message = "";	
// Check Email
email = document.getElementById(email_id).value;
myform = document.getElementById(form_id).value;
if(email.length > 0)
   {
   if (email.indexOf(' ') >= 0) {
      message = message + "電子郵件位址不能包含空格 \n";
	formStatus = "not sent";
	}
   else if (email.indexOf('@') == -1) {
      message = message + "有效的電子郵件位址必須包含\"@\" \n";
	formStatus = "not sent";
	}
   else if (email.indexOf('.') == -1) {
      message = message + "有效的電子郵件位址必須包含\".\" \n";
		formStatus = "not sent";
	}
	else {formStatus="SENT"}
   }
else if (email.length == 0)
   {
	message = message + "您必須輸入有效的電子郵件位址 \n";
	formStatus = "not sent";
   } 

// Check Name
your_name = document.getElementById(name_id).value;

	if (your_name.length == 0)
	{
		message = message + "您必須輸入姓名 \n";
		formStatus = "not sent";
	}
// Check Phone
your_phone = document.getElementById(phone_id).value;
if (your_phone.length > 0) {
	if (!IsNumeric(your_phone))
	
	{
		message = message + "在電話欄位您只能輸入數字 \n";
		formStatus = "not sent";
	}
} else {formStatus = "not sent"; message = message + "電話欄位不能為空白 \n";}
	
	if (formStatus=="not sent") {
	alert ("您輸入的資料內含以下錯誤: \n" + message);
	} else {
	alert ("您的郵件已成功送出");
	document.getElementById(div_id).style.display='none';
	document.getElementById(form_id).submit();
	}
}
//-->