function agregar_codigo_tel(){
  var pais = document.getElementById("combo_pais");
  var num="";

  switch(pais.value){
     case "AF": num=93; break;
	 case "AL": num=355; break;
	 case "DZ": num=213; break;
	 case "AD": num=376; break;
	 case "AO": num=244; break;
	 case "AI": num=1264; break;
	 case "AQ": num=672; break;
	 case "AG": num=1268; break;
	 case "AN": num=599; break;
	 case "SA": num=966; break;
	 case "AM": num=374; break;
	 case "AZ": num=994; break;
	 case "AW": num=297; break;
	 case "BS": num=1242; break;
	 case "BH": num=973; break;
	 case "BD": num=880; break;
	 case "BB": num=1246; break;
	 case "BE": num=32; break;
	 case "BZ": num=501; break;
	 case "BJ": num=229; break;
	 case "BM": num=1441; break;
	 case "BY": num=375; break;
	 case "MM": num=95; break;
	 case "BO": num=591; break;	 
	 case "BA": num=387; break;
	 case "BW": num=267; break;
	 case "BN": num=673; break;
	 case "BF": num=226; break;
	 case "BI": num=257; break;
	 case "BT": num=973; break;
	 case "CV": num=238; break;
	 case "KH": num=855; break;
	 case "CM": num=237; break;
	 case "TD": num=235; break;
	 case "CY": num=257; break;
	 case "VA": num=418; break;
	 case "KM": num=269; break;
	 case "CG": num=242; break;
	 case "CD": num=243; break;
	 case "CI": num=225; break;
	 case "CR": num=506; break;
	 case "HR": num=385; break; 
	 case "KP": num=850; break;
	 case "CU": num=53; break;
	 case "DJ": num=253; break;
	 case "DM": num=1; break;
	 case "DM2": num=809; break;
	 case "EC": num=593; break;
	 case "EG": num=20; break;
	 case "SV": num=503; break;
	 case "AE": num=971; break;
	 case "ER": num=291; break;
	 case "SI": num=386; break;
	 case "ET": num=251; break;
	 case "PH": num=63; break;
	 case "FJ": num=679; break;
	 case "GA": num=241; break;
	 case "GM": num=220; break;
	 case "GE": num=995; break;
	 case "GH": num=233; break;
	 case "GL": num=299; break;
	 case "GP": num=590; break;
	 case "GU": num=1; break;
	 case "GT": num=502; break;
	 case "GY": num=592; break;
	 case "GF": num=593; break;
	 case "GN": num=224; break;
	 case "GQ": num=240; break;
	 case "GW": num=245; break;
	 case "HT": num=509; break;
	 case "HN": num=504; break;
	 case "ID": num=62; break;
	 case "IQ": num=964; break;
	 case "IR": num=98; break;
	 case "BV": num=47; break;
	 case "CX": num=672; break;
	 case "IS": num=354; break;
	 case "KY": num=345; break;
	 case "CK": num=682; break;
	 case "CC": num=672; break;
	 case "FO": num=298; break;
	 case "HM": num=672; break;
	 case "FK": num=500; break;
	 case "MP": num=670; break;
	 case "MH": num=692; break;
	 case "UM": num=1; break;
	 case "PW": num=680; break;
	 case "SB": num=677; break;
	 case "TK": num=237; break;
	 case "TC": num=649; break;
	 case "TC2": num=809; break;
	 case "VI": num=340; break;
	 case "VG": num=0; break;
	 case "WF": num=681; break;
	 case "JA": num=1; break;
	 case "JO": num=962; break;
	 case "KZ": num=7; break;
	 case "KE": num=254; break; 
	 case "KG": num=996; break;
	 case "KI": num=686; break;
	 case "KW": num=965; break;
	 case "LA": num=856; break;
	 case "LS": num=266; break;
	 case "LV": num=371; break;
	 case "LB": num=961; break;
	 case "LR": num=231; break;
	 case "LY": num=218; break;
	 case "LT": num=370; break;
	 case "MK": num=389; break;
	 case "MG": num=261; break;
	 case "MW": num=265; break;
	 case "MV": num=960; break;
	 case "ML": num=223; break;
	 case "MT": num=356; break;
	 case "MA": num=212; break;
	 case "MQ": num=596; break;
	 case "MU": num=230; break;
	 case "MR": num=692; break;
	 case "YT": num=33; break;
	 case "FM": num=691; break;
	 case "MD": num=373; break;
	 case "MN": num=976; break;
	 case "MS": num=1; break;
	 case "MZ": num=258; break;
	 case "NA": num=264; break;
	 case "NR": num=674; break;
	 case "NP": num=977; break;
	 case "NI": num=505; break;
	 case "NE": num=227; break;
	 case "NG": num=234; break;
	 case "NU": num=683; break;
	 case "NF": num=6723; break;
	 case "NC": num=687; break;
	 case "OM": num=968; break;
	 case "PA": num=507; break;
	 case "PG": num=675; break;
	 case "PK": num=92; break;
	 case "PY": num=595; break;
	 case "PN": num=500; break;
	 case "PF": num=678; break;
	 case "QA": num=974; break;
	 case "CF": num=236; break;
	 case "ZA": num=27; break;
	 case "DO": num=1; break;
	 case "DO2": num=809; break;
	 case "SK": num=421; break;
	 case "RE": num=262; break;
	 case "RW": num=250; break;
	 case "RO": num=40; break;
	 case "EH": num=212; break;
	 case "KN": num=685; break;
	 case "WS": num=684; break;
	 case "AS": num=378; break;
	 case "VC": num=784; break;
	 case "SH": num=290; break;
	 case "LC": num=500; break;
	 case "ST": num=678; break;
	 case "SN": num=974; break;
	 case "SC": num=236; break;
	 case "SL": num=27; break;
	 case "SY": num=963; break;
	 case "SO": num=252; break;
	 case "LK": num=94; break;
	 case "PM": num=33; break;
	 case "SZ": num=268; break;
	 case "SD": num=249; break;
	 case "SR": num=597; break;
	 case "TH": num=66; break;
	 case "TZ": num=255; break;
	 case "TJ": num=992; break;
	 case "TF": num=33; break;
	 case "TP": num=670; break;
	 case "TG": num=228; break;
	 case "TO": num=676; break;
	 case "TT": num=1; break;
	 case "TN": num=216; break;
	 case "TM": num=993; break;
	 case "TR": num=90; break;
	 case "TV": num=688; break;
	 case "UA": num=380; break;
	 case "UG": num=256; break;
	 case "UY": num=598; break;
	 case "UZ": num=998; break;
	 case "VU": num=678; break;
	 case "VN": num=84; break;
	 case "YE": num=967; break;
	 case "YU": num=381; break;
	 case "ZM": num=260; break;
	 case "ZW": num=263; break;
     case "DE": num=49; break;
     case "AR": num=54; break;
     case "AU": num=61; break;
     case "AT": num=43; break;
     case "AR": num=54; break; 
     case "BE": num=32; break;
     case "BR": num=55; break;
     case "BG": num=359; break;
     case "CA": num=1; break;
     case "CL": num=56; break;
     case "CN": num=86; break;
     case "AR": num=54; break;
     case "CO": num=57; break;
     case "KR": num=82; break;
     case "DK": num=45; break;
     case "ES": num=34; break;
     case "US": num=1; break;
     case "EE": num=372; break;
     case "FI": num=358; break;
     case "FR": num=33; break;
     case "GR": num=30; break;
     case "HU": num=36; break;
     case "IE": num=353; break;
     case "IL": num=972; break; 
     case "IT": num=39; break; 
     case "JP": num=81; break; 
     case "LI": num=423; break; 
     case "LU": num=352; break; 
     case "MY": num=60; break; 
     case "MX": num=52; break; 
     case "MC": num=377; break; 
     case "NO": num=47; break; 
     case "NZ": num=64; break; 
     case "NL": num=31; break; 
     case "PE": num=51; break;
     case "PL": num=48; break;
     case "PT": num=351; break;
     case "PR": num=1787; break;
     case "UK": num=44; break;
     case "CZ": num=420; break;
     case "RU": num=7; break;
     case "SG": num=65; break;
     case "SE": num=46; break;
     case "CH": num=41; break;
     case "TW": num=886; break;
     case "VE": num=58; break; 
  }
 
  document.getElementById("codigo_pais").innerHTML=pais.value+": ";
  document.getElementById("codigo_tel").value=num;
  document.getElementById("tel").focus();
}