opciones = '<option value ="AR">Argentina</option>\n<option value ="BO">Bolivia</option>\n<option value ="BR">Brasil</option>\n<option value ="CA">Canada</option>\n<option value ="CL">Chile</option>\n<option value ="EM">Co. Europea</option>\n<option value ="CO">Colombia</option>\n<option value ="CR">Costa Rica</option>\n<option value ="CU">Cuba</option>\n<option value ="EC">Ecuador</option>\n<option value ="SV">El Salvador</option>\n<option value ="ES">España</option>\n<option value ="GT">Guatemala</option>\n<option value ="HN">Honduras</option>\n<option value ="MX">México</option>\n<option value ="NI">Nicaragua</option>\n<option value ="PA">Panamá</option>\n<option value ="PY">Paraguay</option>\n<option value ="PE">Perú</option>\n<option value ="PR">Puerto Rico</option>\n<option value ="DO">R. Dominicana</option>\n<option value ="TR">Turquía</option>\n<option value ="UY">Uruguay</option>\n<option value ="US">Usa</option>\n<option value ="VE">Venezuela</option>\n'
txt = '\n' + opciones;
document.write(txt);