function chkUnsubscribeEmailFrm() {
	var obj = document.getElementById("frmUnsubscribeEmail");
	if ( obj["unSubscribeEmail"].value=="Your Email address" || obj["unSubscribeEmail"].value.length < 1 || !checkRegExp(obj["unSubscribeEmail"].value) ) {
		alert("E-mail address is not correct or valid.\r\nPlease check your e-mail address again.");
		obj["unSubscribeEmail"].focus();
		return false;
	}
	obj.action="/e-newsletter/unsubscribe.asp";
	obj.submit();
	return true;
}
function chkUnsubscribeEmpty() {
	var obj = document.getElementById("frmUnsubscribeEmail");
	if ( obj["unSubscribeEmail"].value.length < 1 ) {
		obj["unSubscribeEmail"].value = "Your Email address"
	}
}

function chkUnsubscribeTxt() {
	var obj = document.getElementById("frmUnsubscribeEmail");
	if ( obj["unSubscribeEmail"].value.length < 1 || obj["unSubscribeEmail"].value == "Your Email address") {
		obj["unSubscribeEmail"].value=''
	}
}

function checkRegExp(strEmail){
	if (strEmail == 0) {
		return false;
	} else if (strEmail.indexOf("@") < 0) {
		return false;
	} else if (strEmail.indexOf(".") < 0) {
		return false;
	} else if (strEmail.indexOf(" ") >= 0) {
		return false;
	}
	return true;
}