<!--
function isNumber(str)
{
   var chk_result = true;
   for(var i=0 ; i<str.length ; i++) {
      if(str.charAt(i)<"0" || str.charAt(i)>"9")
     	chk_result = false;
   }
   return chk_result;
}

function isLetter(str)
{
   var chk_result = true;
   for(var i=0 ; i<str.length ; i++) {
      if(str.charAt(i).toLowerCase()<"a" || str.charAt(i).toLowerCase()>"z")
     	chk_result = false;
   }
   return chk_result;
}
  function Svalue(Objsel)
{
  for (var i=0; i < Objsel.length; i++) {
    if (Objsel[i].selected == true)
      if (Objsel[i].value != "")
        return Objsel[i].value;
  }
  return 0;
}


function CHK_SID(string){
    
    str = string.toUpperCase();

    if (str.length != 10) return false;

    if (str.substring(0,1)<"A" ||
        str.substring(0,1)>"Z"){ 
        return false;
    }

    if (!isNumber(str.substring(1,10))){
       return false;
    }

    var firstLetter = "ABCDEFGHJKLMNPQRSTUVXYWZIO";
    var refNo = firstLetter.indexOf(str.substring(0,1)) + 10;
    var x1 = Math.floor(refNo/10); var x2=refNo%10; var y=x1+9*x2;
    for (i=8; i>=1; i--){
      y += i*str.substring(9-i,10-i);
    }
    if (str.substring(9,10)!=(10-y%10)%10) return false;
    return true;
}




function checkout(form) {
	
 if (form.name.value == "") {
	alert("姓　名?");
	form.name.focus();
	return false;
}


   if ( form.tel.value == "") {
   	alert("請在 \"住家 電話\" 欄位填寫資料。");
    form.tel.focus();
    return (false);
   	}	


 if (form.email.value == "") {
	alert("EMAIL?");
	form.email.focus();
	return false;
	}

if ( !(form.email.value == "")) {
 if ((form.email.value.indexOf("@") == "-1") || (form.email.value.indexOf(".") == "-1"))
  {
    alert("E-mail格式不正確!!");
    form.email.focus();
    return (false);
  }    
 }  
 

 if (form.address.value == "") {
	alert("通訊地址?");
	form.address.focus();
	return false;
	}



 
 

  return true;
}
//-->