function validateForm(frm) {
    if (isEmpty(frm.msg)){
		frm.msg.style.background = 'Yellow';
		alert("Please provide a comment");
		frm.msg.style.background = 'White';
		frm.msg.focus();
		return false;
	}
	frm.msg.style.background = 'White';
	return true;
}

function isEmpty(fld) {
    if (fld.value.length == 0) {
        return true;
    } else {
       return false;
    }
}