function submitComments(form)
{
    if(isEmpty(form.who.value))
	{
		alert("Please enter your name");
		return false;
	}

	if(isEmpty(form.what.value))
	{
		alert("Please enter a comment");
		return false;
	}
	
	return true;
}

function isEmpty(str) {
	if (str.length == 0) {
		return true;
	}
	return false;
}