function checkEmail (strng) { var error=""; if (strng == "") { error = "You didn't enter an email address.\n"; } var emailFilter=/^.+@.+\..{2,3}$/; if (!(emailFilter.test(strng))) { error = "Please enter a valid email address.\n"; } else { //test email for illegal characters var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ if (strng.match(illegalChars)) { error = "The email address contains illegal characters.\n"; } } return error; } // phone number - strip out delimiters and check for 10 digits function checkPhone (strng) { var error = ""; if (strng == "") { error = "You didn't enter a phone number.\n"; } var stripped = strng.replace(/[\(\)\.\-\ ]/g, ''); //strip out acceptable non-numeric characters if (isNaN(parseInt(stripped))) { error = "The phone number contains illegal characters."; } if (!(stripped.length == 10)) { error = "The phone number is the wrong length. Make sure you included an area code.\n"; } return error; } // password - between 6-8 chars, uppercase, lowercase, and numeral function checkPassword (strng) { var error = ""; if (strng == "") { error = "You didn't enter a password.\n"; } var illegalChars = /[\W_]/; // allow only letters and numbers if ((strng.length < 6) || (strng.length > 8)) { error = "The password is the wrong length.\n"; } else if (illegalChars.test(strng)) { error = "The password contains illegal characters.\n"; } else if (!((strng.search(/(a-z)+/)) && (strng.search(/(A-Z)+/)) && (strng.search(/(0-9)+/)))) { error = "The password must contain at least one uppercase letter, one lowercase letter, and one numeral.\n"; } return error; } // username - 4-10 chars, uc, lc, and underscore only. function checkUsername (strng) { var error = ""; if (strng == "") { error = "You didn't enter a username.\n"; } var illegalChars = /\W/; // allow letters, numbers, and underscores if ((strng.length < 4) || (strng.length > 10)) { error = "The username is the wrong length.\n"; } else if (illegalChars.test(strng)) { error = "The username contains illegal characters.\n"; } return error; } function convertnull(strng) { if (strng.length == 0) { return "NULL"; }else{ return strng; } } // non-empty textbox function isEmpty(strng, which, lngth) { var error = ""; if (strng.length == 0) { error = "The "+which+" field is required. \n"; } else { if (strng == "NULL") { error = "The "+which+" field is required.\n" }else{ if (lngth > 1) { if (strng.length < lngth) { error += "The "+which+" field must be at least "+lngth+" characters long.\n" } } } } return error; } // was textbox altered function isDifferent(strng) { var error = ""; if (strng != "Can\'t touch this!") { error = "You altered the inviolate text area.\n"; } return error; } // exactly one radio button is chosen function checkRadio(checkvalue, which) { var error = ""; if (!(checkvalue)) { error = "Please choose a "+which+"\n"; } return error; } // valid selector from dropdown list function checkDropdown(choice, which) { var error = ""; if (choice == 0) { error = "You didn't choose a "+which+".\n"; } return error; } //function checkWholeForm(theForm) { // var why = ""; //why += checkEmail(theForm.email.value); //why += checkPhone(theForm.phone.value); //why += checkPassword(theForm.password.value); //why += checkUsername(theForm.username.value); // why += isEmpty(convertnull(theForm.firstname.value), "First Name", 1); // why += isEmpty(convertnull(theForm.lastname.value), "Last Name", 1); // why += isEmpty(convertnull(theForm.address.value), "Address", 1); // why += isEmpty(convertnull(theForm.city.value), "City", 1); // why += isEmpty(convertnull(theForm.state.value), "State", 2); // why += isEmpty(convertnull(theForm.zipcode.value), "Zip Code", 5); //why += isDifferent(theForm.different.value); //for (i=0, n=theForm.radios.length; i