var lastNumSms=1; function textCounter(field,cntfield,maxlimit) { if (field.value.length > maxlimit) field.value = field.value.substring(0, maxlimit); else cntfield.value = maxlimit – field.value.length; } Messaggio: Caratteri rimanenti Prefisso Numero —Tim 330 331 333 334 335 336 337 338 339 360 363 366 368 —Vodafone 340 343 345 346 347 348 349 377 —Wind 320 323 327 328 329 380 [...]