function validateEmail(txtEmail) {
	var strEmail = txtEmail.value;
	strEmail=strEmail.replace(/\s+/g,"")
	txtEmail.value=strEmail

	var isValid = (strEmail.search(/^[\w.%-]+@[\w.%-]+\.[a-z]{2,4}$/i) >= 0)
	if (!isValid) {
		alert("Please enter a valid email address.");
		txtEmail.focus();
	}
	return isValid;
}