text: function harga($data){
  	var temp = document.getElementById("price").value;
  	if ($data == 'Standard') {
  		temp = parseFloat(temp);
  		temp = temp + 9;
  	}
  	else if ($data == 'Express') {
  		temp = parseFloat(temp);
  		temp = temp + 18;
  	}
  	document.getElementById("total").value = temp;
  }