var isValidationLoaded = false; function showMessage(message) { alert(message); gField.focus(); gField.select(); return false; } // general purpose function to see if an input value has been // entered at all // function isEmpty(inputVal) { inputStr = inputVal.toString() if ((inputStr == null) || (inputStr == "") || (inputStr.length == 0)) { return false } return true } // general purpose function to see if a suspected numeric input // is a positive integer // function isPosInteger(inputVal) { inputStr = inputVal.toString() for (var i = 0; i < inputStr.length; i++) { var oneChar = inputStr.charAt(i) if (oneChar < "0" || oneChar > "9") { return false } } return true } // general purpose function to see if a suspected numeric input // is a positive or negative integer // function isInteger(inputVal) { inputStr = inputVal.toString() for (var i = 0; i < inputStr.length; i++) { var oneChar = inputStr.charAt(i) if (i == 0 && oneChar == "-") { continue } if (oneChar < "0" || oneChar > "9") { return false } } return true } // general purpose function to see if a suspected numeric input // is a positive or negative number // function isNumber(inputVal) { oneDecimal = false inputStr = inputVal.toString() for (var i = 0; i < inputStr.length; i++) { var oneChar = inputStr.charAt(i) if (i == 0 && oneChar == "-") { continue } if (oneChar == "." && !oneDecimal) { oneDecimal = true continue } if (oneChar < "0" || oneChar > "9") { return false } } return true } // // isNotEmpty // function isNotEmpty() { var inputStr = gField.value.toString(); if (inputStr != "" && inputStr.length > 0) return true; return showMessage("Het veld '" + gFieldName + "' moet ingevuld worden!"); } // // E-Mail validation // function isValidEmail() { var email = gField.value; if (email == null || email == "") return true; var atPos = email.indexOf('@'); if (atPos < 0) return showMessage("Ongeldig e-mailadres!"); var username = email.substring(0,atPos).toLowerCase(); var hostname = email.substring(atPos+1,email.length).toLowerCase(); if (!validMailString(username)) return showMessage("Ongeldig e-mailadres!"); if (!validMailString(hostname)) return showMessage("Ongeldig e-mailadres!"); if (hostname.indexOf('.') < 0) return showMessage("Ongeldig e-mailadres!"); return true; } function validMailString(inputStr) { for (var i = 0; i < inputStr.length; i++) { var oneChar = inputStr.charAt(i); if (oneChar < "a" || oneChar > "z") { if (oneChar < "0" || oneChar > "9") { if (oneChar != ".") { if (oneChar != "_") { if (oneChar != "-") { return false; } } } } } } return true; } function returnOnlyNumbers(inputVal) { var inputStr = inputVal.toString(); var outputStr = ''; for (var i = 0; i < inputStr.length; i++) { var oneChar = inputStr.charAt(i); if (oneChar >= "0" && oneChar <= "9") { outputStr += oneChar; } } return outputStr; } function isValidCCExpDate() { var ccexp = '' + returnOnlyNumbers(gField.value); var expmonth = 0; var expyear = 0; var realmonth = 0; var realyear = 0; if (ccexp.length<3 || ccexp.length>6) return showMessage("Dit veld dient correct ingevuld te worden!"); if (ccexp.length==3) { expmonth=ccexp.substring(0,1); expyear=ccexp.substring(1,3); } if (ccexp.length==4) { if (ccexp.substring(0,1)=="0") { expmonth=ccexp.substring(1,2); expyear=ccexp.substring(2,4); } else { expmonth=ccexp.substring(0,2); expyear=ccexp.substring(2,4); } } if (ccexp.length==5) { expmonth=ccexp.substring(0,1); expyear=ccexp.substring(1,5); } if (ccexp.length==6) { expmonth=ccexp.substring(0,2); expyear=ccexp.substring(2,6); } // make sure month is a valid value if (expmonth<1 || expmonth>12) return showMessage("Ongeldige maandinformatie!"); expmonth++; expmonth--; expyear++; expyear--; // convert years to a standard 4 digit format if (ccexp.length==3 || ccexp.length==4) { if (expyear > 90) { expyear=expyear+1900; } else { expyear=expyear+2000; } } // check the date timeisit=new Date(); realmonth=timeisit.getMonth(); realmonth++; realyear=timeisit.getYear(); if (realyear<2000) realyear=realyear+1900; // compare expiration values with current ones if (expyear==realyear) { if (expmonth 12) { // month value is not 1 thru 12 alert("Ongeldige maandinformatie!\n\nGelieve een waarde in te vullen tussen 01 (Januari) en 12 (December).") gField.focus() gField.select() return false } if (dd < 1 || dd > 31) { // date value is not 1 thru 31 alert("Ongeldige daginformatie!\n\nU dient een waarde in te vullen tussen 01 en maximaal 31.") gField.focus() gField.select() return false } // validate year, allowing for checks between year ranges // passed as parameters from other validation functions if (yyyy < 100) { // entered value is two digits, which we allow for 1930-2029 if (yyyy >= 30) { yyyy += 1900 } else { yyyy += 2000 } } else { var today = new Date() // default year range (now set to (this year - 100) and (this year + 25)) var thisYear = today.getYear() if (thisYear < 100) { thisYear += 1900 } var minYear = thisYear - 100 var maxYear = thisYear + 25 if (yyyy < minYear || yyyy > maxYear) { alert("Ongeldige jaarinformatie!\n\nU dient een waarde in te vullen tussen " + minYear + " en " + maxYear + ".") gField.focus() gField.select() return false } } if (!checkMonthLength(mm,dd)) { gField.focus() gField.select() return false } if (mm == 2) { if (!checkLeapMonth(mm,dd,yyyy)) { gField.focus() gField.select() return false } } gField.value = monthDayFormat(dd) + "." + monthDayFormat(mm) + "." + yyyy return true } function monthDayFormat(number) { var str = "" if (number < 10) { str = "0" + number.toString() } else { str = number.toString() } return str } // check the entered month for too high a value function checkMonthLength(mm,dd) { var months = new Array("","Januari","Februari","Maart","April","Mei","Juni","Juli","Augustus","September","Oktober","November","December") if ((mm == 4 || mm == 6 || mm == 9 || mm == 11) && dd > 30) { alert(months[mm] + " telt maar 30 dagen.") return false } else if (dd > 31) { alert(months[mm] + " telt maar 31 dagen.") return false } return true } // check the entered February date for too high a value function checkLeapMonth(mm,dd,yyyy) { if (yyyy % 4 > 0 && dd > 28) { alert("Februari " + yyyy + " telt maar 28 dagen.") return false } else if (dd > 29) { alert("Februari " + yyyy + " telt 29 dagen.") return false } return true } // // Begin validation dispatching mechanism // function dispatcher(validationFunc) { this.doValidate = validationFunc; } var dispatchLookup = new Array() dispatchLookup["isNotEmpty"] = new dispatcher(isNotEmpty); dispatchLookup["isValidEmail"] = new dispatcher(isValidEmail); dispatchLookup["isValidCCExpDate"] = new dispatcher(isValidCCExpDate); dispatchLookup["isValidBLZ"] = new dispatcher(isValidBLZ); dispatchLookup["isDateFormat"] = new dispatcher(isDateFormat); // main validation function called by form event handlers function validate(frame, form, field, method, fielddesc) { gFrame = frame; gForm = form; gField = eval("window." + frame.name + ".document." + form.name + "." + field.name); gFieldName = fielddesc; var args = validate.arguments; // for (i = 3; i < args.length; i++) { if (!dispatchLookup[args[3]].doValidate()) { return false; } // } return true; } // ***************************************************** // the following codeline must be the last one !!! // ***************************************************** isValidationLoaded = true;