function getSelectedRadio(buttonGroup) {
if (buttonGroup[0]) {
for (var i=0; i<buttonGroup.length; i++) {
if (buttonGroup[i].checked) {
return i
}}
} else {
if (buttonGroup.checked) { return 0; }
}
return -1;
}					
function getSelectedRadioValue(buttonGroup) {
var i = getSelectedRadio(buttonGroup);
if (i == -1) {
return "";
} else {
if (buttonGroup[i]) {
return buttonGroup[i].value;
} else {
return buttonGroup.value;
}}} 
function getSelectedCheckbox(buttonGroup){
var strSelected = ""
for (var i=0; i < buttonGroup.length; i++){
if (buttonGroup[i].checked){ 
strSelected += buttonGroup[i].value + ","; 	
}}
if( strSelected.length > 0 ){
strSelected = strSelected.substr(0,strSelected.length-1);
}
return strSelected;
}
function isInteger(s){
var i;
for (i = 0; i < s.length; i++){   
var c = s.charAt(i);
if (((c < "0") || (c > "9"))) return false;
}
return true;
}
function isDouble(s){
s = s.replace(',','.');	
var i;
var iPoints = 0;
for (i = 0; i < s.length; i++){   
var c = s.charAt(i);
if ( c == "." && i == 0) return false;			
if ( c != "0" && c != "1" && c != "2" && c != "3" && c != "4" && c != "5" && c != "6" && c != "7" && c != "8"&& c != "9"&& c != ".") return false;
if ( c == ".") iPoints += 1;		
}
if ( iPoints > 1) return false;		
return true;
}
function isDate(d,m,Y){
Y = parseInt(Y);
m = parseInt(m);
d = parseInt(d);	
if(isNaN(Y)) return false;
if(isNaN(m)) return false;	
if(isNaN(d)) return false;		
var date = new Date(Y,m-1,d);  
var convertedDate = ""+date.getFullYear() + (date.getMonth()+1) + date.getDate();  
var givenDate = "" + Y + m + d; 
return ( givenDate == convertedDate);  
}  
function isTime(H,i,s){
H = parseInt(H);
i = parseInt(i);
s = parseInt(s);	
var blnTime = true;
if(0>H||H>23||isNaN(H)) blnTime = false;
if(0>i||i>59||isNaN(i)) blnTime = false;	
if(0>s||s>59||isNaN(s)) blnTime = false;	
return blnTime;  
}  
function isEmail(e){
var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if (filter.test(e)) return true;
else return false;
}
function isUrl(u) {
var v = new RegExp();
v.compile("^[A-Za-z]+://[A-Za-z0-9-_]+\\.[A-Za-z0-9-_%&\?\/.=]+$");
if (!v.test(u)) {
return false;
}}
function serialize( mixed_value ) {
var _getType = function( inp ) {
var type = typeof inp, match;
if (type == 'object' && !inp) {
return 'null';
}
if (type == "object") {
if (!inp.constructor) {
return 'object';
}
var cons = inp.constructor.toString();
if (match = cons.match(/(\w+)\(/)) {
cons = match[1].toLowerCase();
}
var types = ["boolean", "number", "string", "array"];
for (key in types) {
if (cons == types[key]) {
type = types[key];
break;
}}}
return type;
};
var type = _getType(mixed_value);
var val, ktype = '';
switch (type) {
case "function": 
val = ""; 
break;
case "undefined":
val = "N";
break;
case "boolean":
val = "b:" + (mixed_value ? "1" : "0");
break;
case "number":
val = (Math.round(mixed_value) == mixed_value ? "i" : "d") + ":" + mixed_value;
break;
case "string":
val = "s:" + mixed_value.length + ":\"" + mixed_value + "\"";
break;
case "array":
case "object":
val = "a";
var count = 0;
var vals = "";
var okey;
for (key in mixed_value) {
ktype = _getType(mixed_value[key]);
if (ktype == "function" && ktype == "object") { 
continue; 
}
okey = (key.match(/^[0-9]+$/) ? parseInt(key) : key);
vals += serialize(okey) +
serialize(mixed_value[key]);
count++;
}
val += ":" + count + ":{" + vals + "}";
break;
}
if (type != "object" && type != "array") val += ";";
return val;
}	
function unserialize(data){
var error = function (type, msg, filename, line){throw new window[type](msg, filename, line);};
var read_until = function (data, offset, stopchr){
var buf = [];
var chr = data.slice(offset, offset + 1);
var i = 2;
while(chr != stopchr){
if((i+offset) > data.length){
error('Error', 'Invalid');
}
buf.push(chr);
chr = data.slice(offset + (i - 1),offset + i);
i += 1;
}
return [buf.length, buf.join('')];
};
var read_chrs = function (data, offset, length){
buf = [];
for(var i = 0;i < length;i++){
var chr = data.slice(offset + (i - 1),offset + i);
buf.push(chr);
}
return [buf.length, buf.join('')];
};
var _unserialize = function (data, offset){
if(!offset) offset = 0;
var buf = [];
var dtype = (data.slice(offset, offset + 1)).toLowerCase();
var dataoffset = offset + 2;
var typeconvert = new Function('x', 'return x');
var chrs = 0;
var datalength = 0;
switch(dtype){
case "i":
typeconvert = new Function('x', 'return parseInt(x)');
var readData = read_until(data, dataoffset, ';');
var chrs = readData[0];
var readdata = readData[1];
dataoffset += chrs + 1;
break;
case "b":
typeconvert = new Function('x', 'return (parseInt(x) == 1)');
var readData = read_until(data, dataoffset, ';');
var chrs = readData[0];
var readdata = readData[1];
dataoffset += chrs + 1;
break;
case "d":
typeconvert = new Function('x', 'return parseFloat(x)');
var readData = read_until(data, dataoffset, ';');
var chrs = readData[0];
var readdata = readData[1];
dataoffset += chrs + 1;
break;
case "n":
readdata = null;
break;
case "s":
var ccount = read_until(data, dataoffset, ':');
var chrs = ccount[0];
var stringlength = ccount[1];
dataoffset += chrs + 2;
var readData = read_chrs(data, dataoffset+1, parseInt(stringlength));
var chrs = readData[0];
var readdata = readData[1];
dataoffset += chrs + 2;
if(chrs != parseInt(stringlength) && chrs != readdata.length){
error('SyntaxError', 'String length mismatch');
}
break;
case "a":
var readdata = {};
var keyandchrs = read_until(data, dataoffset, ':');
var chrs = keyandchrs[0];
var keys = keyandchrs[1];
dataoffset += chrs + 2;
for(var i = 0;i < parseInt(keys);i++){
var kprops = _unserialize(data, dataoffset);
var kchrs = kprops[1];
var key = kprops[2];
dataoffset += kchrs;
var vprops = _unserialize(data, dataoffset);
var vchrs = vprops[1];
var value = vprops[2];
dataoffset += vchrs;
readdata[key] = value;
}
dataoffset += 1;
break;
default:
error('SyntaxError', 'Unknown / Unhandled data type(s): ' + dtype);
break;
}
return [dtype, dataoffset - offset, typeconvert(readdata)];
};
return _unserialize(data, 0)[2];
}