// Validation.js
//
// Portions adapted from FormChek.js, (c) 1997 Netscape Communications Corporation
// http://developer.netscape.com/docs/examples/javascript/formval/overview.html
// Use by placing in your tag:
//
// (Don't forget the closing script tag, and put nothing inside it).
//
// Note that this will not work with browsers that do not support JavaScript 1.2 or above.
// Most browsers should support this, though!
// To support younger browsers, SSI-include it into your page instead, like:
//
function VL_IsPosInteger(strVal) {
// Returns true if strVal is a positive integer; else returns false.
// Empty strings are NOT positive integers.
var inputStr = "" + strVal; // convert to string
if (inputStr.length <= 0) return false; // Empty string is NOT positive integer.
for (var i = 0; i < inputStr.length; i++) {
var oneChar = inputStr.charAt(i);
if (oneChar < "0" || oneChar > "9")
return false;
}
return true;
}
function VL_IsEmpty(strVal) {
// Returns true if inputVal is empty; else returns false.
// Whitespace is not considered emptiness. For whitespace
// checks, we should use something like IsWhitespace
return (strVal == null || strVal == "");
}
function VL_IsLengthBetween(strVal, iMinLength, iMaxLength) {
// Returns true if strVal's length is between iMinLength and
// iMaxLength, inclusive.
// (so if iMinLength is 3 and iMaxLength is 5, all values of strVal
// with lengths of 3, 4 or 5 will cause this function to return true; else false).
// If min/max are flipped, swap them.
if (iMinLength > iMaxLength) {
var iTemp = iMaxLength;
iMaxLength = iMinLength;
iMinLength = iTemp;
}
strVal += ""; // convert to string
return (strVal.length >= iMinLength && strVal.length <= iMaxLength);
}
function VL_IsAlphanumeric (strVal) {
// Returns true if strVal is alphanumeric.
// Empty strings are NOT alphanumeric.
if (strVal.length <= 0) return false;
for (var i=0; i= "a") && (strChar <= "z")) || ((strChar >= "A") && (strChar <= "Z")) );
}
function VL_IsDigit (strChar) {
// Note: This will return false for anything longer than 1 digit.
// Note: "12", "343", "4567", "00" etc. are not digits.
// Use the integer tests instead, for these.
return ((strChar >= "0") && (strChar <= "9"));
}
function VL_IsEmail(strEmail) {
var oRegexEmail = new RegExp("^(?:(?:(?:(?:[!#$%&'*+\\-/0123456789=?@ABCDEFGHIJKLMNOPQRSTUVWXYZ^_`abcdefghijklmnopqrstuvwxyz\\{\\|\\}~]+)|\"(?:\\\\[\\\\\"]|[^\"])+\")(?:\\.(?:(?:[!#$%&'*+\\-/0123456789=?@ABCDEFGHIJKLMNOPQRSTUVWXYZ^_`abcdefghijklmnopqrstuvwxyz\\{\\|\\}~]+)|\"(?:\\\\[\\\\\"]|[^\"])+\"))*)@(?:[!#$%&'*+\\-/0123456789=?@ABCDEFGHIJKLMNOPQRSTUVWXYZ^_`abcdefghijklmnopqrstuvwxyz\\{\\|\\}~]+)(?:\\.(?:[!#$%&'*+\\-/0123456789=?@ABCDEFGHIJKLMNOPQRSTUVWXYZ^_`abcdefghijklmnopqrstuvwxyz\\{\\|\\}~]+))+)$")
return (strEmail != null && oRegexEmail.test(strEmail));
}
function VL_Trim(strText) {
// Returns the string with beginning and ending whitespace removed
if (strText == null) { return ""; }
strText = strText + ""; // Cast to string
return strText.replace(/^\s*|\s*$/g,"");
}
function VL_setElementVisibility(bDisplay) {
// setElementVisibility(bDisplay, strElementID1, strElementID2, ..., strElementIDn)
var oElement = null;
for (var i=1; i