/*
  -------------------------------------------------------------------------
                            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 "length":
    case "len":
        {
            if(eval(objValue.value.length) !=  eval(cmdvalue))
            {
                if(!strError || strError.length ==0)
                {
                    strError = objValue.name + " : need "+cmdvalue+" characters ";
                }//if
                alert(strError + "\n[Current length = " + objValue.value.length + " ]");
                return false;
            }//if
            break;
        }//case maxlen
    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.
*/