function amf(){
var taeka = document.getElementById('Quantity').value;
var taenamo1 = document.getElementById('Serial1');
var taenamo2 = document.getElementById('Serial2');
var taenamo3 = document.getElementById('Serial3');
var taenamo4 = document.getElementById('Serial4');
var taenamo5 = document.getElementById('Serial5');
var taenamo6 = document.getElementById('Serial6');
var taenamo7 = document.getElementById('Serial7');
var taenamo8 = document.getElementById('Serial8');
var taenamo9 = document.getElementById('Serial9');
var taenamo10 = document.getElementById('Serial10');

if(taeka >= 11){	
		taenamo1.disabled = false;
		taenamo2.disabled = false;
		taenamo3.disabled = false;
		taenamo4.disabled = false;
		taenamo5.disabled = false;
		taenamo6.disabled = false;
		taenamo7.disabled = false;
		taenamo8.disabled = false;
		taenamo9.disabled = false;
		taenamo10.disabled = false;
} else {
switch (taeka){	
	case '1': {
		taenamo1.disabled = false;
		taenamo2.disabled = true;
		taenamo3.disabled = true;
		taenamo4.disabled = true;
		taenamo5.disabled = true;
		taenamo6.disabled = true;
		taenamo7.disabled = true;
		taenamo8.disabled = true;
		taenamo9.disabled = true;
		taenamo10.disabled = true;}
		break;
	case '2': {
		taenamo1.disabled = false;
		taenamo2.disabled = false;
		taenamo3.disabled = true;
		taenamo4.disabled = true;
		taenamo5.disabled = true;
		taenamo6.disabled = true;
		taenamo7.disabled = true;
		taenamo8.disabled = true;
		taenamo9.disabled = true;
		taenamo10.disabled = true;}
		break;
	case '3': {
		taenamo1.disabled = false;
		taenamo2.disabled = false;
		taenamo3.disabled = false;
		taenamo4.disabled = true;
		taenamo5.disabled = true;
		taenamo6.disabled = true;
		taenamo7.disabled = true;
		taenamo8.disabled = true;
		taenamo9.disabled = true;
		taenamo10.disabled = true;}
		break;
	case '4': {
		taenamo1.disabled = false;
		taenamo2.disabled = false;
		taenamo3.disabled = false;
		taenamo4.disabled = false;
		taenamo5.disabled = true;
		taenamo6.disabled = true;
		taenamo7.disabled = true;
		taenamo8.disabled = true;
		taenamo9.disabled = true;
		taenamo10.disabled = true;}
		break;
	case '5': {
		taenamo1.disabled = false;
		taenamo2.disabled = false;
		taenamo3.disabled = false;
		taenamo4.disabled = false;
		taenamo5.disabled = false;
		taenamo6.disabled = true;
		taenamo7.disabled = true;
		taenamo8.disabled = true;
		taenamo9.disabled = true;
		taenamo10.disabled = true;}
		break;
	case '6': {
		taenamo1.disabled = false;
		taenamo2.disabled = false;
		taenamo3.disabled = false;
		taenamo4.disabled = false;
		taenamo5.disabled = false;
		taenamo6.disabled = false;
		taenamo7.disabled = true;
		taenamo8.disabled = true;
		taenamo9.disabled = true;
		taenamo10.disabled = true;}
		break;
	case '7': {
		taenamo1.disabled = false;
		taenamo2.disabled = false;
		taenamo3.disabled = false;
		taenamo4.disabled = false;
		taenamo5.disabled = false;
		taenamo6.disabled = false;
		taenamo7.disabled = false;
		taenamo8.disabled = true;
		taenamo9.disabled = true;
		taenamo10.disabled = true;}
		break;
	case '8': {
		taenamo1.disabled = false;
		taenamo2.disabled = false;
		taenamo3.disabled = false;
		taenamo4.disabled = false;
		taenamo5.disabled = false;
		taenamo6.disabled = false;
		taenamo7.disabled = false;
		taenamo8.disabled = false;
		taenamo9.disabled = true;
		taenamo10.disabled = true;}
		break;
	case '9': {
		taenamo1.disabled = false;
		taenamo2.disabled = false;
		taenamo3.disabled = false;
		taenamo4.disabled = false;
		taenamo5.disabled = false;
		taenamo6.disabled = false;
		taenamo7.disabled = false;
		taenamo8.disabled = false;
		taenamo9.disabled = false;
		taenamo10.disabled = true;}
		break;
	case '10': {
		taenamo1.disabled = false;
		taenamo2.disabled = false;
		taenamo3.disabled = false;
		taenamo4.disabled = false;
		taenamo5.disabled = false;
		taenamo6.disabled = false;
		taenamo7.disabled = false;
		taenamo8.disabled = false;
		taenamo9.disabled = false;
		taenamo10.disabled = false;}
		break;	
	default: {
		taenamo1.disabled = true;
		taenamo2.disabled = true;
		taenamo3.disabled = true;
		taenamo4.disabled = true;
		taenamo5.disabled = true;
		taenamo6.disabled = true;
		taenamo7.disabled = true;
		taenamo8.disabled = true;
		taenamo9.disabled = true;
		taenamo10.disabled = true;}
		break;
}
}

}