/*
var frmvalidator = new formValidator("myform");
frmvalidator.addValidation("FirstName","req","Please enter your First Name");
frmvalidator.addValidation("FirstName","maxlen=20","Max length for FirstName is 20");
frmvalidator.addValidation("FirstName","alpha");
frmvalidator.addValidation("LastName","req");
frmvalidator.addValidation("LastName","maxlen=20");
frmvalidator.addValidation("Email","maxlen=50");
frmvalidator.addValidation("Email","req");
frmvalidator.addValidation("Email","email");
frmvalidator.addValidation("Zip","maxlen=10");
frmvalidator.addValidation("Zip","req");
frmvalidator.addValidation("Zip","zip");
frmvalidator.addValidation("Phone","maxlen=50");
frmvalidator.addValidation("Phone","numeric");
frmvalidator.addValidation("Address","maxlen=50");
frmvalidator.addValidation("Country","dontselect=0");
myformValidator.addValidation("LicProgram","selone","You must select at least one program!"); (radio)
*/
// whitespace characters
var whitespace = " \t\n\r";
/****************************************************************/
// Right trims the string...  Useful for SQL datatypes of CHAR
function RTrim(strTrim)
{
var str = new String(strTrim);
var i = 0;
var c = "";
var endpos = 0
for (i = str.length; i >= 0 && endpos == 0; i = i - 1) {
c = str.charAt(i);
if (whitespace.indexOf(c) == -1)
endpos = i;
}
return str.substring(0,endpos+1);
}
/****************************************************************/
// Check whether string s is empty.
function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}
/****************************************************************/
// Returns true if string s is empty or 
// whitespace characters only.
function isWhitespace (s)
{   var i;
// Is s empty?
if (isEmpty(s)) return true;
// Search through string's characters one by one
// until we find a non-whitespace character.
// When we do, return false; if we don't, return true.
for (i = 0; i < s.length; i++)
{   
// Check that current character isn't whitespace.
var c = s.charAt(i);
if (whitespace.indexOf(c) == -1) return false;
}
// All characters are whitespace.
return true;
}
function formValidator(frmname) {
this.formobj=document.forms[frmname];
if(!this.formobj)
{
alert("BUG: couldnot get Form object "+frmname);
return;
}
if(this.formobj.onsubmit)
{
this.formobj.old_onsubmit = this.formobj.onsubmit;
this.formobj.onsubmit=null;
}
else
{
this.formobj.old_onsubmit = null;
}
this.formobj.onsubmit=form_submit_handler;
this.addValidation = add_validation;
this.setAddnlValidationFunction=set_addnl_vfunction;
this.clearAllValidations = clear_all_validations;
}
function set_addnl_vfunction(functionname)
{
this.formobj.addnlvalidation = functionname;
}
function clear_all_validations()
{
for(var itr=0;itr < this.formobj.elements.length;itr++)
{
this.formobj.elements[itr].validationset = null;
}
}
function form_submit_handler() {
for(var itr=0;itr < this.elements.length;itr++) {
if(this.elements[itr].validationset && !this.elements[itr].validationset.validate()) {
return false;
}
}
if(this.addnlvalidation) {
str =" var ret = "+this.addnlvalidation+"()";
alert(str);
eval(str);
if(!ret) return ret;
}
return true;
}
function add_validation(itemname,descriptor,errstr)
{
if(!this.formobj) {
alert("BUG: the form object is not set properly");
return;
}//if
var itemobj = this.formobj[itemname];
//for radio button; don't do for 'select' item
if(itemobj.length && isNaN(itemobj.selectedIndex)) {
itemobj = itemobj[0];
}	
if(!itemobj){
alert("BUG: Couldnot get the input object named: "+itemname);
return;
}
if(!itemobj.validationset) {
itemobj.validationset = new ValidationSet(itemobj);
}
itemobj.validationset.add(descriptor,errstr);
}
function ValidationDesc(inputitem,desc,error) {
this.desc=desc;
this.error=error;
this.itemobj = inputitem;
this.validate=vdesc_validate;
}
function vdesc_validate() {
if(!validateInput(this.desc,this.itemobj,this.error)) {
this.itemobj.focus();
return false;
}
return true;
}
function ValidationSet(inputitem) {
this.vSet=new Array();
this.add = add_validationdesc;
this.validate= vset_validate;
this.itemobj = inputitem;
}
function add_validationdesc(desc,error) {
this.vSet[this.vSet.length]= new ValidationDesc(this.itemobj,desc,error);
}
function vset_validate() {
for(var itr=0;itr<this.vSet.length;itr++) {
if(!this.vSet[itr].validate()) {
return false;
}
}
return true;
}
/*  checks the validity of an email address entered 
*   returns true or false 
*/ 
function validateEmail(email) {
var splitted = email.match("^(.+)@(.+)$");
if(splitted == null) return false;
if(splitted[1] != null )
{
var regexp_user=/^\"?[\w-_\.]*\"?$/;
if(splitted[1].match(regexp_user) == null) return false;
}
if(splitted[2] != null)
{
var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/;
if(splitted[2].match(regexp_domain) == null) 
{
var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/;
if(splitted[2].match(regexp_ip) == null) return false;
}// if
return true;
}
return false;
}
// This function determines if the string passed in is a valid
// US zip code.  It accepts either ##### or #####-####.  If the
// string is valid, it returns true, else false.
function isZipcode(strZip)
{
var s = new String(strZip);
if (s.length != 5 && s.length != 10)
// inappropriate length
return false;
for (var i=0; i < s.length; i++)
if ((s.charAt(i) < '0' || s.charAt(s) > '9') && s.charAt(i) != '-')
return false;
return true;
}
function TestComparison(objValue,strCompareElement,strvalidator,strError) {
var bRet=true;
var objCompare=null;
if(!objValue.form)
{
alert("BUG: No Form object!");
return false
}
objCompare = objValue.form.elements[strCompareElement];
if(!objCompare)
{
alert("BUG: Element with name"+strCompareElement+" not found !");
return false;
}
if(strvalidator != "eqelmnt")
{
if(isNaN(objValue.value)) 
{ 
alert(objValue.name+": Should be a number "); 
return false; 
}//if 
if(isNaN(objCompare.value)) 
{ 
alert(objCompare.name+": Should be a number "); 
return false; 
}//if 	  
}//if
var cmpstr="";
switch(strvalidator)
{
case "eqelmnt": 
{
if(objValue.value != objCompare.value)
{
cmpstr = " should be equal to ";
bRet = false;
}//if
break;
}//case
case "ltelmnt":
{
if(eval(objValue.value) >= eval(objCompare.value)) 
{
cmpstr =  " should be less than "; 
bRet = false;					
}
break;
}//case
case "leelmnt":
{
if(eval(objValue.value) >  eval(objCompare.value)) 
{
cmpstr =  " should be less than or equal to"; 
bRet = false;					
}
break;
}//case		
case "gtelmnt":
{
if(eval(objValue.value) <=  eval(objCompare.value)) 
{
cmpstr =  " should be greater than"; 
bRet = false;					
}
break;
}//case
case "geelmnt":
{
if(eval(objValue.value) < eval(objCompare.value)) 
{
cmpstr =  " should be greater than or equal to"; 
bRet = false;					
}
break;
}//case
}//switch
if(bRet==false) {
if(!strError || strError.length==0) {
strError = objValue.name + cmpstr + objCompare.value; 
}//if
alert(strError);
}//if
return bRet;
}
function TestSelMin(objValue,strMinSel,strError) {
var bret = true;
var objcheck = objValue.form.elements[objValue.name];
var chkcount =0;
if(objcheck.length)
{
for(var c=0;c < objcheck.length;c++)
{
if(objcheck[c].checked == "1")
{
chkcount++;
}//if
}//for
}
else
{
chkcount = (objcheck.checked == "1")?1:0;
}
var minsel = eval(strMinSel);
if(chkcount < minsel)
{
if(!strError || strError.length ==0) 
{ 
strError = "Please Select atleast"+minsel+" check boxes for"+objValue.name;  
}//if                                                               
alert(strError); 
bret = false;
}
return bret;
}
function TestDontSelectChk(objValue,chkValue,strError)
{
var pass=true;
var objcheck = objValue.form.elements[objValue.name];
if(objcheck.length)
{
var idxchk=-1;
for(var c=0;c < objcheck.length;c++)
{
if(objcheck[c].value == chkValue)
{
idxchk=c;
break;
}//if
}//for
if(idxchk>= 0)
{
if(objcheck[idxchk].checked=="1")
{
pass=false;
}
}//if
}
else
{
if(objValue.checked == "1")
{
pass=false;
}//if
}//else
if(pass==false)
{
if(!strError || strError.length ==0) 
{ 
strError = "Can't Proceed as you selected "+objValue.name;  
}//if			  
alert(strError);
}
return pass;
}
function TestRequiredInput(objValue,strError)
{
var ret = true;
if(eval(objValue.value.length) == 0 || isWhitespace(objValue.value)) { 
if(!strError || strError.length ==0) { 
strError = objValue.name + " : Required Field"; 
}//if 
alert(strError); 
ret=false; 
}//if 
return ret;
}
function TestMaxLen(objValue,strMaxLen,strError)
{
var ret = true;
if(eval(objValue.value.length) > eval(strMaxLen)) 
{ 
if(!strError || strError.length ==0) 
{ 
strError = objValue.name + " : "+ strMaxLen +" characters maximum "; 
}//if 
alert(strError + "\n[Current length = " + objValue.value.length + " ]"); 
ret = false; 
}//if 
return ret;
}
function TestMinLen(objValue,strMinLen,strError)
{
var ret = true;
if(eval(objValue.value.length) <  eval(strMinLen)) 
{ 
if(!strError || strError.length ==0) 
{ 
strError = objValue.name + " : " + strMinLen + " characters minimum  "; 
}//if               
alert(strError + "\n[Current length = " + objValue.value.length + " ]"); 
ret = false;   
}//if 
return ret;
}
function TestInputType(objValue,strRegExp,strError,strDefaultError)
{
var ret = true;
var charpos = objValue.value.search(strRegExp); 
if(objValue.value.length > 0 &&  charpos >= 0) 
{ 
if(!strError || strError.length ==0) 
{ 
strError = strDefaultError;
}//if 
alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
ret = false; 
}//if 
return ret;
}
function TestEmail(objValue,strError)
{
var ret = true;
if(!validateEmail(objValue.value)) 
{ 
if(!strError || strError.length ==0) 
{ 
strError = objValue.name+": Enter a valid Email address "; 
}//if                                               
alert(strError); 
ret = false; 
}//if 
return ret;
}
function TestZip(objValue,strError)
{
var ret = true;
if(!isZipcode(objValue.value)) 
{ 
if(!strError || strError.length ==0) 
{ 
strError = objValue.name+": Enter a valid Zip code "; 
}//if                                               
alert(strError); 
ret = false; 
}//if 
return ret;
}
function TestLessThan(objValue,strLessThan,strError)
{
var ret = true;
if(isNaN(objValue.value)) 
{ 
alert(objValue.name+": Should be a number "); 
ret = false; 
}//if 
else
if(eval(objValue.value) >=  eval(strLessThan)) 
{ 
if(!strError || strError.length ==0) 
{ 
strError = objValue.name + " : value should be less than "+ strLessThan; 
}//if               
alert(strError); 
ret = false;                 
}//if   
return ret;          
}
function TestGreaterThan(objValue,strGreaterThan,strError)
{
var ret = true;
if(isNaN(objValue.value)) 
{ 
alert(objValue.name+": Should be a number "); 
ret = false; 
}//if 
else
if(eval(objValue.value) <=  eval(strGreaterThan)) 
{ 
if(!strError || strError.length ==0) 
{ 
strError = objValue.name + " : value should be greater than "+ strGreaterThan; 
}//if               
alert(strError); 
ret = false;
}//if  
return ret;           
}
function TestRegExp(objValue,strRegExp,strError)
{
var ret = true;
if(!objValue.value.match(strRegExp)) 
{ 
if(!strError || strError.length ==0) 
{ 
strError = objValue.name+": Invalid characters found "; 
}//if                                                               
alert(strError); 
ret = false;                   
}//if 
return ret;
}
function TestDontSelect(objValue,index,strError)
{
var ret = true;
if(objValue.selectedIndex == null) 
{ 
alert("BUG: dontselect command for non-select Item"); 
ret = false; 
} 
else
if(objValue.selectedIndex == eval(index)) 
{ 
if(!strError || strError.length ==0) 
{ 
strError = objValue.name+": Please Select one option "; 
}//if                                                               
alert(strError); 
ret =  false;                                   
} 
return ret;
}
function TestSelectOneRadio(objValue,strError)
{
var objradio = objValue.form.elements[objValue.name];
var one_selected=false;
for(var r=0;r < objradio.length;r++)
{
if(objradio[r].checked == "1")
{
one_selected=true;
break;
}
}
if(false == one_selected)
{
if(!strError || strError.length ==0) 
{
strError = "Please select one option from "+objValue.name;
}	
alert(strError);
}
return one_selected;
}
//*  Checks each field in a form 
function validateInput(strValidateStr,objValue,strError) 
{ 
var ret = true;
var epos = strValidateStr.search("="); 
var  command  = ""; 
var  cmdvalue = ""; 
if(epos >= 0) 
{ 
command  = strValidateStr.substring(0,epos); 
cmdvalue = strValidateStr.substr(epos+1); 
} 
else 
{ 
command = strValidateStr; 
} 
switch(command) 
{ 
case "req": 
case "required": 
{ 
ret = TestRequiredInput(objValue,strError)
break;             
}
case "maxlength": 
case "maxlen": 
{ 
ret = TestMaxLen(objValue,cmdvalue,strError)
break; 
}
case "minlength": 
case "minlen": 
{ 
ret = TestMinLen(objValue,cmdvalue,strError)
break; 
}
case "alnum": 
case "alphanumeric": 
{ 
ret = TestInputType(objValue,"[^A-Za-z0-9]",strError, 
objValue.name+": Only alpha-numeric characters allowed ");
break; 
}
case "alnum_s": 
case "alphanumeric_space": 
{ 
ret = TestInputType(objValue,"[^A-Za-z0-9\\s]",strError, 
objValue.name+": Only alpha-numeric characters and space allowed ");
break; 
}		   
case "num": 
case "numeric": 
{ 
ret = TestInputType(objValue,"[^0-9]",strError, 
objValue.name+": Only digits allowed ");
break;               
}
case "alphabetic": 
case "alpha": 
{ 
ret = TestInputType(objValue,"[^A-Za-z]",strError, 
objValue.name+": Only alphabetic characters allowed ");
break; 
}
case "alphabetic_space": 
case "alpha_s": 
{ 
ret = TestInputType(objValue,"[^A-Za-z\\s]",strError, 
objValue.name+": Only alphabetic characters and space allowed ");
break; 
}
case "email": 
{ 
ret = TestEmail(objValue,strError);
break; 
}
case "zip": { 
ret = TestZip(objValue,strError);
break; 
}
case "lt": 
case "lessthan": 
{ 
ret = TestLessThan(objValue,cmdvalue,strError);
break; 
}
case "gt": 
case "greaterthan": 
{ 
ret = TestGreaterThan(objValue,cmdvalue,strError);
break; 
}
case "regexp": 
{ 
ret = TestRegExp(objValue,cmdvalue,strError);
break; 
}
case "dontselect": 
{ 
ret = TestDontSelect(objValue,cmdvalue,strError)
break; 
}
case "dontselectchk":
{
ret = TestDontSelectChk(objValue,cmdvalue,strError)
break;
}
case "selmin":
{
ret = TestSelMin(objValue,cmdvalue,strError);
break;
}
case "selone":
{
ret = TestSelectOneRadio(objValue,strError);
break;
}		 
//Comparisons
case "eqelmnt": 
case "ltelmnt":
case "leelmnt":
case "gtelmnt":
case "geelmnt":
{
return TestComparison(objValue,cmdvalue,command,strError);
break;
}
}//switch 
return ret; 
}