function isCC(myNumber) { if (myNumber.length != 16) {return false;} for (var i = 0; i < myNumber.length; i++) { isNumber = 0; for (var j=0; j<10; j++) if ("" + j == myNumber.charAt(i)) isNumber = 1; if (isNumber == 0) {return false;} } return true; }

function isZIP(myNumber) { if (myNumber.length != 5) {return false;} for (var i = 0; i < myNumber.length; i++) { isNumber = 0; for (var j=0; j<10; j++) if ("" + j == myNumber.charAt(i)) isNumber = 1; if (isNumber == 0) {return false;} } return true; }

function isSSN(myNumber) { if (myNumber.length != 11) {return false;} if (myNumber.charAt(3) != "-") {return false;} if (myNumber.charAt(6) != "-") {return false;} newString = myNumber.substring(0,3) + myNumber.substring(4,6) + myNumber.substring(7,11); for (var i = 0; i < newString.length; i++) { isNumber = 0; for (var j=0; j<10; j++) if ("" + j == newString.charAt(i)) isNumber = 1; if (isNumber == 0) {return false;} } return true; }

function isTelephoneNumber(myNumber) { if (myNumber.charAt(0) == "(") { // The number is in (123) 456-7890 format if (myNumber.charAt(4) != ")") {return false;} if (myNumber.charAt(5) != " ") {return false;} if (myNumber.charAt(9) != "-") {return false;} newString = myNumber.substring(1,4) + myNumber.substring(6,9) + myNumber.substring(10,14); } else { // The number must be in 123-456-7890 format if (myNumber.charAt(3) != "-") {return false;} if (myNumber.charAt(7) != "-") {return false;} newString = myNumber.substring(0,3) + myNumber.substring(4,7) + myNumber.substring(8,12); } for (var i = 0; i < newString.length; i++) { isNumber = 0; for (var j=0; j<10; j++) if ("" + j == newString.charAt(i)) isNumber = 1; if (isNumber == 0) {return false;} } return true; }