function trimLeft(str) {
if (str == null) { return null; }
for (var i = 0; str.charAt(i) == " "; i++);
return str.substring(i, str.length);
}
function trimRight(str) {
if (str == null) { return null; }
for (var i = str.length - 1; str.charAt(i) == " "; i--);
return str.substring(0, i + 1);
}
function trim(str) { return trimLeft(trimRight(str)); }
function trimLeftAll(str) {
if (str == null) { return str; }
for (var i = 0; str.charAt(i) == " " || str.charAt(i) == "\n" || str.charAt(i) == "\t"; i++);
return str.substring(i, str.length);
}
function trimRightAll(str) {
if (str == null) { return str; }
for (var i = str.length - 1; str.charAt(i) == " " || str.charAt(i) == "\n" || str.charAt(i) == "\t"; i--);
return str.substring(0, i + 1);
}
function replaceAll(varb, replaceThis, replaceBy) {
newvarbarray = varb.split(replaceThis);
newvarb = newvarbarray.join(replaceBy);
return newvarb;
}
function trimAll(str) {
return trimLeftAll(trimRightAll(str));
}
// isNull(value)
// Returns true if value is null
function isNull(val) { return (val == ""); }
// isBlank(value)
// Returns true if value only contains spaces
function isBlank(val) {
return isNull(trimAll(val));
}
// isInteger(value)
// Returns true if value contains all digits
function isInteger(val) {
if (isBlank(val)) { return false; }
for (var i = 0; i < val.length; i++) {
if (!isDigit(val.charAt(i))) { return false; }
}
return true;
}
// isNumeric(value)
// Returns true if value contains a positive float value
function isNumeric(val) { return (parseFloat(val) == (val * 1) && parseFloat(val) >= 0); }
// isArray(obj)
// Returns true if the object is an array, else false
function isArray(obj) { return (typeof (obj.length) == "undefined") ? false : true; }
// isDigit(value)
// Returns true if value is a 1-character digit
function isDigit(num) {
if (num.length > 1) { return false; }
var string = "1234567890";
if (string.indexOf(num) != -1) { return true; }
return false;
}
// setNullIfBlank(input_object)
// Sets a form field to "" if it isBlank()
function setNullIfBlank(obj) { if (isBlank(obj.value)) { obj.value = ""; } }
//Basic function added
//return true if the string is valid email string
function isEmailChar(str) {
for (i = 0; i < str.length; i++) {
c = str.charAt(i);
if ("~!#$%^&*(),\'`:\;?<>=+\n\t \\\"".indexOf(c, 0) > 0)
return false;
}
return true;
}
//return true if the parts of email are valid
function isValidEmail(email) {
var array = email.split("@");
if (array.length != 2) return false;
var first, last;
first = array[0]; last = array[1];
if (first.charAt(0) == '.') return false;
if (first.charAt(first.length) == '.') return false;
if (last.charAt(0) == '.') return false;
if (first == "" || last == "") return false;
first = trimLeftAll(first);
last = trimRightAll(last);
if (!isEmailChar(first) || !isEmailChar(last))
return false;
return true;
}
// return true if number is in range of number
function isInRangeOfNumber(number, from, to) {
if (from <= number && number <= to)
return true;
return false;
}
// round by type
// type="L": lowerRound. Ex: roundEx(1.255, 2, "L") = 1.25
// type="U": upperRound. Ex: roundEx(1.254, 2, "U") = 1.26
// type=others: Ex:roundEx(1.255, 2, "") = 1.26
var DEFAULT_ROUND_TYPE = "L";
function roundEx(val, digit, type) {
var result = val;
if (type == "L")
result = lowerRound(val, digit);
else if (type == "U")
result = upperRound(val, digit);
else
result = round(val, digit);
return result;
}
// return round number. Ex: lowerRound(1.255, 2) = 1.26
function round(number, digits) {
var num = Math.pow(10, digits);
var result = Math.round(number * num);
result = result / num;
return result;
}
// return round number. Ex: upperRound(1.254, 2) = 1.26
function upperRound(number, digits) {
var num = Math.pow(10, digits);
num = num + 0.5;
var result = Math.round(number * num);
result = result / num;
return result;
}
// return round number. Ex: lowerRound(1.256, 2) = 1.25
function lowerRound(number, digits) {
var num = Math.pow(10, digits);
var result = parseInt(number * num);
result = result / num;
return result;
}
//return true if the ENTER key is pressed
function isEnterPressed(evt) {
evt = (evt) ? evt : event;
var charCode = (evt.charCode) ? evt.charCode : ((evt.which) ? evt.which : evt.keyCode);
if (charCode == 13 || charCode == 3)
return true;
return false;
}
function txt_copy(txtFrom, txtTo) {
txtTo.value = txtFrom.value;
}
// File chondat.js
function DefineBrowser() {
// Neu trinh duyet la IE thi return "IE"
// Neu trinh duyet la FireFox thi return "FF"
return checkbrowser();
}
function checkbrowser() {
var browsertype = navigator.userAgent.toLowerCase();
if (browsertype.indexOf('msie') != -1) {
browser = 'isIE';
return browser;
}
else if (browsertype.indexOf('netscape') != -1) {
browser = 'isNS';
return browser;
}
else if (browsertype.indexOf('safari') != -1) {
browser = 'isSF';
return browser;
}
else if (browsertype.indexOf('gecko') != -1) {
browser = 'isFF';
return browser;
}
}
function setMessage(divmassage, url) {
var message = document.getElementById(divmassage)
message.style.display = '';
setTimeout("javascript:window.location='" + url + "';", 500);
}
// play movie file
function PlayFile(strSource, ctlID) {
var width = 300;
var height = 300;
var s;
if (strSource.indexOf(".flv") > 0 || strSource.indexOf(".mp4") > 0) {
s = " ";
}
else {
s = "