function showsection() {
	
	 SelIndex = document.getElementById("prv").value;
	if (SelIndex == 10100){
	  document.getElementById("sec").style.display = '';
	  document.getElementById("amphur").style.display = 'none';
	  document.getElementById("amphur").value = '';
	}
	else{
	  document.getElementById("sec").style.display = 'none';
	  document.getElementById("sec").value = 0;
	  document.getElementById("amphur").style.display = '';
	}
}

function showsection2() {
	
	 SelIndex = document.getElementById("prv2").value;
	if (SelIndex == 10100){
	  document.getElementById("sec2").style.display = '';
	  document.getElementById("amphur2").style.display = 'none';
	  document.getElementById("amphur2").value = '';
	}
	else{
	  document.getElementById("sec2").style.display = 'none';
	  document.getElementById("sec2").value = 0;
	  document.getElementById("amphur2").style.display = '';
	}
}