function selOperadora(n) {
	var operadoras = 11;
	for (i = 1; i < (operadoras+1); i++) {
		document.getElementById('sel_'+i).style.backgroundPosition = '0 58px';
	}
	document.getElementById('sel_'+n).style.backgroundPosition = '0 0';
	document.getElementById('rec_operadora').value = n; 

	switch (n)
	{

	case 1:
	document.cookie = 'oper=4';
	break;
	
	case 2:
	document.cookie = 'oper=6';
	break;

	case 3:
	document.cookie = 'oper=5';
	break;

	case 4:
	document.cookie = 'oper=50';
	break;

	case 5:
	document.cookie = 'oper=7';
	break;

	case 6:
	document.cookie = 'oper=51';
	break;

	case 7:
	document.cookie = 'oper=2';
	break;

	case 8:
	document.cookie = 'oper=3';
	break;

	case 9:
	document.cookie = 'oper=71';
	break;

	case 10:
	document.cookie = 'oper=72';
	break;
	
	case 11:
	document.cookie = 'oper=95';
	break;

	default:
	alert("No has seleccionado ningun operador");
}
}