function onClick_Visibility(cbo, trID, idx) {
	var tr = document.getElementById(trID).style;
	if (document.getElementById(cbo).selectedIndex > idx) {
		tr.visibility = 'visible';
		tr.display	  = 'block';
	}
	else if (document.getElementById(cbo).selectedIndex == idx) {
		tr.visibility = 'hidden';
		tr.display	  = 'none';
	}
}

function onClick_VisibilityBelow(cbo, trID, idx) {
	var tr = document.getElementById(trID).style;
	if (document.getElementById(cbo).selectedIndex == idx) {
		tr.visibility = 'visible';
		tr.display	  = 'block';
	}
	else {
		tr.visibility = 'hidden';
		tr.display	  = 'none';
	}
}