function validateEmail() {
    var pattern=/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
    if (!pattern.test($jq('#signup_email_address').val())) {
        $jq('#signup_email_address').css('border','1px solid #FF0000');
        return false;
    }
}

function validateEmailinNav(input_id, error_div){

      if ( valEmail(document.getElementById(input_id).value))
      	{
			return true;
            }else{
			$jq('#email_sign_up_popover_error_div').show();
			return false;
            }
}

function valEmail(idFieldToValidate) {

    var pattern=/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
    if (!pattern.test(idFieldToValidate)){
	return false;
    }
    else {
	return true;
    }

}