// Determine whether form field contains a value
function isFilled(elm) {
	if (elm.value=="" || elm.value==null) {
		return false;
	} else {
		return true;
	}
}

// Is description box empty
function is_description_empty(f) {
	if (isFilled(f.description)==false)  {
		alert("Description field cannot be blank");
		f.description.focus();
		return false;
	}
	return true;
}