function viewCustomer(i) {
	document.fmCustomer.customer_id.value=i;
	document.fmCustomer.action = "viewcustomer.php";
	document.fmCustomer.method = "post";
	document.fmCustomer.submit();
}

function modCustomer() {
	document.fmCustomer.action = "editcustomer.php";
	document.fmCustomer.method = "post";
	document.fmCustomer.submit();
}

function delCustomer(i) {
	document.fmCustomer.at.value = "Delete";
	document.fmCustomer.action = "viewcustomer.php";
	document.fmCustomer.method = "post";
	document.fmCustomer.submit();
}

function exportData() {
	document.fmCustomer.at.value = "Export";
	document.fmCustomer.action = "export.php";
	document.fmCustomer.method = "post";
	document.fmCustomer.submit();
}

function goPage(f,p) {
	f.pageNo.value=p;
	f.action = "index.php";
	f.method="post";
	f.target="";
	f.submit();
}

function emailCheck (emailStr) {
var checkTLD=1;
var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
var emailPat=/^(.+)@(.+)$/;
var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
var validChars="\[^\\s" + specialChars + "\]";
var quotedUser="(\"[^\"]*\")";
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
var atom=validChars + '+';
var word="(" + atom + "|" + quotedUser + ")";
var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
var matchArray=emailStr.match(emailPat);

if (matchArray==null) {
alert("Invalid e-mail address. (Please check for @ and .'s)");
return false;
}
var user=matchArray[1];
var domain=matchArray[2];
for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
alert("Ths username contains invalid characters.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("Ths domain name contains invalid characters.");
return false;
   }
}

if (user.match(userPat)==null) {

alert("The username doesn't seem to be valid.");
return false;
}

var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {

for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
alert("Destination IP address is invalid!");
return false;
   }
}
return true;
}
 
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
if (domArr[i].search(atomPat)==-1) {
alert("The domain name does not seem to be valid.");
return false;
   }
}

if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
alert("The address must end in a well-known domain or two letter " + "country.");
return false;
}

if (len<2) {
alert("This address is missing a hostname!");
return false;
}

return true;
}

function checkSubscription(f){
r = false;
if (f.txFirstName.value == '') {
	f.txFirstName.focus();
	alert('FIRST NAME required.');
} else if ((f.txEmail.value == '')||(f.txEmail.length <= 7)) {
	f.txEmail.focus();
	alert('E-MAIL ADDRESS required.');
} else if (emailCheck(f.txEmail.value)==false) {
	f.txEmail.focus();
	alert('E-MAIL ADDRESS is invalid.');
} else if (IsDuplicate(f,f.txEmail.value)==true) {
	f.txEmail.focus();
	alert('This E-MAIL ADDRESS already exists.');
} else if ((f.cbOthers.checked == true)&&(f.txOthers.value == '')) {
	f.txOthers.focus();
	alert('For Others, please specify.');
} else { 
    r = true;
}
return r;
}

function checkCustomer(f){
r = false;
if (f.txFirstName.value == '') {
	f.txFirstName.focus();
	alert('FIRST NAME required.');
} else if ((f.txEmail.value == '')||(f.txEmail.length <= 7)) {
	f.txEmail.focus();
	alert('E-MAIL ADDRESS required.');
} else if (emailCheck(f.txEmail.value)==false) {
	f.txEmail.focus();
	alert('E-MAIL ADDRESS is invalid.');
} else if ((f.currEmail.value != f.txEmail.value)&&(f.dupEmail.value=='TRUE')) {
	f.txEmail.focus();
	alert('This E-MAIL ADDRESS already exists.');
} else if ((f.cbOthers.checked == true)&&(f.txOthers.value == '')) {
	f.txOthers.focus();
	alert('For Others, please specify.');
} else { 
	f.action = "viewcustomer.php";
	f.submit();
}
return r;
}

function queryDB() {
	var fmObj = document.fmCustomer;
	fmObj.customer_id.value = fmObj.txCustomerID.value;
	fmObj.customer_name.value = fmObj.txName.value;
	fmObj.email.value = fmObj.txEmail.value;
	if(fmObj.cbFriends.checked == true){ fmObj.refer_friends.value = fmObj.cbFriends.value;	}
	if(fmObj.cbAtMall.checked == true){ fmObj.refer_mall = fmObj.cbAtMall.value; }
	if(fmObj.cbInternet.checked == true){ fmObj.refer_internet.value = fmObj.cbInternet.value; }
	if(fmObj.cbOthers.checked == true){ fmObj.refer_others.value = fmObj.cbOthers.value; }
	fmObj.recPerPage.value = fmObj.lbRecPerPage.value;
	fmObj.action = "index.php";
	fmObj.method="post";
	fmObj.target = "";
	fmObj.submit();
}

function IsDuplicate(email){
	var xmlHttp;
	var isDuplicate;
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp = new XMLHttpRequest();
	}
	catch (e){
		// Internet Explorer
		try {
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			try {
				xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}


	xmlHttp.onreadystatechange=function() {
		if((xmlHttp.readyState==4)||(xmlHttp.readyState=="complete")) {
			document.getElementById('dupEmail').value = xmlHttp.responseText;
		}
	}
	var params="email="+encodeURIComponent(email);
	xmlHttp.open("POST", "ajax_checkduplicate.php", true);
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.send(params);
}