function up( form, e ) {
	elem = form.elements[e].value;
	if( elem == "" )
		elem = 0;
	else
		elem = parseInt( elem );
	form.elements[e].value = elem + 1;
}

function down( form, e ) {
	elem = form.elements[e].value;
	if( elem == "" )
		elem = 0;
	else
		elem = parseInt( elem );
	if( elem > 1 )
		form.elements[e].value = elem - 1;
	else
		form.elements[e].value = "";
}