var emailPattern  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
//check for valid email
var emailRegExp = new RegExp(emailPattern);
function isValidEmail(username){
	return emailRegExp.test(username);
}

function validatePassword(formName){
	var formObject = document.getElementById(formName);
	if(formObject.confirmpassword.value != formObject.password.value){
		alert("Confirm Password does not match with password entered.\nPlease try again");
		return false;
	}
	if(!isValidEmail(formObject.username.value)){
		alert("The username that you entered is not valid.  Please enter a valid email Id as username.");
		return false;
	}
	if(formObject.password.value.length < 6){
		alert("Password should be minimum of 6 characters in length");
		return false;
	}
	return true;
}