/*
 -------------------------------------------------------------------------
 JavaScript Form Validator 
 Version 2.0.2
 Copyright 2003 JavaScript-coder.com. All rights reserved.
 You use this script in your Web pages, provided these opening credit
 lines are kept intact.
 The Form validation script is distributed free from JavaScript-Coder.com
 
 You may please add a link to JavaScript-Coder.com, 
 making it easy for others to find this script.
 Checkout the Give a link and Get a link page:
 http://www.javascript-coder.com/links/how-to-link.php
 
 You may not reprint or redistribute this code without permission from 
 JavaScript-Coder.com.
 
 JavaScript Coder
 It precisely codes what you imagine!
 Grab your copy here:
 http://www.javascript-coder.com/
 -------------------------------------------------------------------------  
 */
function Validator(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 + "()";
        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];
    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 (!V2validateData(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;
}
function validateEmailv2(email)
{
// a very simple email validation checking. 
// you can add more complex email checking if it helps 
    if (email.length <= 0)
    {
        return true;
    }
    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;
}
function V2validateData(strValidateStr, objValue, strError)
{
    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":
        {
            if (eval(objValue.value.length) == 0)
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + " : Required Field";
                }//if 
                alert(strError);
                return false;
            }//if 
            break;
        }//case required 
        case "maxlength":
        case "maxlen":
        {
            if (eval(objValue.value.length) > eval(cmdvalue))
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + " : " + cmdvalue + " characters maximum ";
                }//if 
                alert(strError + "\n[Current length = " + objValue.value.length + " ]");
                return false;
            }//if 
            break;
        }//case maxlen 
        case "minlength":
        case "minlen":
        {
            if (eval(objValue.value.length) < eval(cmdvalue))
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + " : " + cmdvalue + " characters minimum  ";
                }//if               
                alert(strError + "\n[Current length = " + objValue.value.length + " ]");
                return false;
            }//if 
            break;
        }//case minlen 
        case "alnum":
        case "alphanumeric":
        {
            var charpos = objValue.value.search("[^A-Za-z0-9]");
            if (objValue.value.length > 0 && charpos >= 0)
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + ": Only alpha-numeric characters allowed ";
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
                return false;
            }//if 
            break;
        }//case alphanumeric 
        case "num":
        case "numeric":
        {
            var charpos = objValue.value.search("[^0-9]");
            if (objValue.value.length > 0 && charpos >= 0)
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + ": Only digits allowed ";
                }//if               
                alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
                return false;
            }//if 
            break;
        }//numeric 
        case "alphabetic":
        case "alpha":
        {
            var charpos = objValue.value.search("[^A-Za-z]");
            if (objValue.value.length > 0 && charpos >= 0)
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + ": Only alphabetic characters allowed ";
                }//if                             
                alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
                return false;
            }//if 
            break;
        }//alpha 
        case "alnumhyphen":
        {
            var charpos = objValue.value.search("[^A-Za-z0-9\-_]");
            if (objValue.value.length > 0 && charpos >= 0)
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + ": characters allowed are A-Z,a-z,0-9,- and _";
                }//if                             
                alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
                return false;
            }//if 			
            break;
        }
        case "email":
        {
            if (!validateEmailv2(objValue.value))
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + ": Enter a valid Email address ";
                }//if                                               
                alert(strError);
                return false;
            }//if 
            break;
        }//case email 
        case "lt":
        case "lessthan":
        {
            if (isNaN(objValue.value))
            {
                alert(objValue.name + ": Should be a number ");
                return false;
            }//if 
            if (eval(objValue.value) >= eval(cmdvalue))
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + " : value should be less than " + cmdvalue;
                }//if               
                alert(strError);
                return false;
            }//if             
            break;
        }//case lessthan 
        case "gt":
        case "greaterthan":
        {
            if (isNaN(objValue.value))
            {
                alert(objValue.name + ": Should be a number ");
                return false;
            }//if 
            if (eval(objValue.value) <= eval(cmdvalue))
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + " : value should be greater than " + cmdvalue;
                }//if               
                alert(strError);
                return false;
            }//if             
            break;
        }//case greaterthan 
        case "regexp":
        {
            if (objValue.value.length > 0)
            {
                if (!objValue.value.match(cmdvalue))
                {
                    if (!strError || strError.length == 0)
                    {
                        strError = objValue.name + ": Invalid characters found ";
                    }//if                                                               
                    alert(strError);
                    return false;
                }//if 
            }
            break;
        }//case regexp 
        case "dontselect":
        {
            if (objValue.selectedIndex == null)
            {
                alert("BUG: dontselect command for non-select Item");
                return false;
            }
            if (objValue.selectedIndex == eval(cmdvalue))
            {
                if (!strError || strError.length == 0)
                {
                    strError = objValue.name + ": Please Select one option ";
                }//if                                                               
                alert(strError);
                return false;
            }
            break;
        }//case dontselect 
    }//switch 
    return true;
}
/*
 Copyright 2003 JavaScript-coder.com. All rights reserved.
 */