function validation(){
	var lang = document.getElementById("lang").value;
	if (document.getElementById("name").value == ""){
		if (lang == "c") alert ("請輸入名稱");
		else alert("Please input name");
		document.getElementById("name").focus();
		return false;
	}
	if  (!(document.getElementsByName("title")[0].checked || document.getElementsByName("title")[1].checked)){
		if (lang == "c") alert ("請輸入稱謂");
		else alert("Please input title");
		document.getElementsByName("title")[0].focus();
		return false;
	}
	if (document.getElementById("phone").value == ""){
		if (lang == "c") alert ("請輸入聯絡電話");
		else alert("Please input contact");
		document.getElementById("phone").focus();
		return false;
	}
	if (isNaN(document.getElementById("phone").value) || (document.getElementById("phone").value.length) != 8){
		if (lang == "c") alert ("聯絡電話須為8位數字");
		else alert("Contact number should be of 8 numeric digits.");
		document.getElementById("phone").focus();
		return false;
	}
	if (document.getElementById("cc_loan").value == ""){
		if (lang == "c") alert ("請輸入信用卡/私人貸款總結欠轉賬額");
		else alert("Please input credit card / personal loan outstanding amount");
		document.getElementById("cc_loan").focus();
		return false;
	}
	if (isNaN(document.getElementById("loan_amt").value) || !(parseInt(document.getElementById("loan_amt").value) >= 10000 && parseInt(document.getElementById("loan_amt").value) <= 1000000)){
		if (lang == "c") alert ("貸款額須為10,000至1,000,000之間的數字"); 
        else alert("Total Loan amount must be between HK$10,000 and HK$1,000,000.");
		// document.getElementById("loan_amt").focus();
		// document.getElementById("ad_loan").focus();
		// document.getElementById("cc_loan").focus();
		return false;
	    }
	/* if (document.getElementById("loan_amt").value == ""){
		if (lang == "c") alert ("請輸入貸款額");
		else alert("Please input loan");
		document.getElementById("loan_amt").focus();
		return false;
	} */
	if (document.getElementById("period").value == ""){
		if (lang == "c") alert ("請輸入還款期");
		else alert("Please input repayment period");
		document.getElementById("period").focus();
		return false;
	}
	/*
	var ad_loan = document.getElementById("ad_loan").value;
	var cc_loan = document.getElementById("cc_loan").value;
	var sumcal = parseInt(cc_loan) + parseInt(ad_loan);
	  if(sumcal >= 1000000 && sumcal <= 10000){
		alert("Total Loan Amount ranges from HK$10,000 to HK$1,000,000 xx");
		//document.getElementById("loan_amt").focus();
		return false; 
	} */
							   
	if(!document.getElementById("ad_loan").value == "" && document.getElementById("cc_loan").value == ""){
		if (lang == "c") alert ("請填寫信用咭/私人貸款總數"); 
		else alert("Please input the credit card / Personal Loan Total Amount");
		return false;
/*	}else{
	    var cc_loan = cc_loan.value;
		var ad_loan = ad_loan.value;
	    loan_amt.value = cc_loan + ad_loan;
		//return true;
	} */
  }
}