/***************************************************************************************************
*
*-- Form validation script by Peter Bailey, Copyright (c) 2001-2003
*   Version 5.01b
*   Updated on Feb 07, 2004
*   www.peterbailey.net
*   me@peterbailey.net
*
*   IF YOU USE THIS SCRIPT, GIVE ME CREDIT PLEASE =)
*
*   Visit http://www.peterbailey.net/fValidate/ for more info
*
*   Feel free to contact me with any questions, comments, problems, or suggestions
*
*   Note: This document most easily read with tab spacing set to 4
*
*******************************************************************************************************/

/*  Create static fvalidate object
------------------------------------------- */
if ( typeof fvalidate == 'undefined' )
{
    var fvalidate = new Object();
}

/*  Generic event handling
------------------------------------------- */
fvalidate.addEvent = function( obj, evt, fn, useCapture )
{
    if ( typeof obj.attachEvent != 'undefined' )
    {
        obj.attachEvent( "on" + evt, fn );
    }
    else if ( typeof obj.attachEventListener != 'undefined' )
    {
        obj.addEventListener( evt, fn, Boolean( useCapture ) );
    }
}
fvalidate.addEvents = function( obj, evts, fn, useCapture )
{
    var i = 0, evt;
    while( evt = evts[i++] )
    {
        this.addEvent( obj, evt, fn, Boolean( useCapture ) );
    }
}

/*  Main validation routine
------------------------------------------- */
function validateForm( f, bConfirm, bDisable, bDisableR, groupError, errorMode )
{
    //  Set defaults
    bConfirm    = Boolean( bConfirm );
    bDisable    = Boolean( bDisable );
    bDisableR   = Boolean( bDisableR );
    groupError  = Boolean( groupError );
    errorMode   = ( typeof errorMode != 'undefined' ) ? parseInt( errorMode, 10 ) : 0;

    //  Init vars and fValidate object
    var params, fvCode, type;
    if ( typeof f.fv == 'undefined' )
    {
        f.fv = new fValidate( f, errorMode, groupError );
    } else {
        f.fv._reset();
        f.fv.errorMode = errorMode;
    }

    //  Loop through all form elements
    var elem, i = 0, attr = f.fv.config.code;
    while ( elem = f.elements[i++] )
    {
        //  Skip fieldsets
        if ( elem.nodeName == "FIELDSET" ) continue;

        //  Does element have validator attribute? (short-circuit check)
        fvCode          = ( elem[attr] ) ? elem[attr] : elem.getAttribute( attr );
        if ( !( typeof fvCode == 'undefined' || fvCode == null || fvCode == "" ) )
        {
            //  Set params, validation type, and validation state
            params          = fvCode.split( "|" );
            type            = params[0];
            elem.validated  = true;

            //  Valid validator type?
            if ( typeof f.fv[type] == 'undefined' )
            {
                f.fv.devError( [type, elem.name], 'notFound' );
                return false;
            }

            //  Check for modifiers
            switch( params.last() )
            {
                case 'bok'  :   //  bok requested
                    params = params.reduce( 1, 1 );
                    elem.bok = true;
                    break;
                case 'if'   :   //  Conditional validation requested
                    params = params.reduce( 1, 1 );
                    elem._if_ = true;
                    break;
                case 'then' :   //  Conditional validation requested
                    params = params.reduce( 1, 1 );
                    elem._then_ = true;
                    break;
                default     :   //  No modifiers
                    params = params.reduce( 1, 0 );

            }

            //  Is element an array?
            if ( /radio|checkbox/.test( elem.type ) )
            {
                //  Set group property
                elem.group = f.elements[elem.name];
            }

            //  Add events if not already added
            if ( typeof elem.fName == 'undefined' )
            {
                //  If element is an array
                if ( typeof elem.group != 'undefined' )
                {
                    for ( var j = 0; j < elem.group.length; j++ )
                    {
                        //  Apply event-function to each child
                        if ( f.fv.config.clearEvent != null )
                        {
                        //  fvalidate.addEvent( elem.group.item( j ), fv.config.clearEvent, fv.revertError, false );
                            addEvent( elem.group.item( j ), f.fv.config.clearEvent, f.fv, 'revertError', false );
                        }
                    }
                }
                else
                {
                    //  Apply event-function to element
                //  fvalidate.addEvent( elem, fv.config.clearEvent, fv.revertError, false );
                    addEvent( elem, f.fv.config.clearEvent, f.fv, 'revertError', false );
                }
            }

            //  Set formatted name, current element
            elem.fName  = elem.name.format();
            f.fv.elem       = elem;
            f.fv.type       = type;

            //  Create function to call the proper validator method of the fValidate class
            var func = new Function( "obj", "method", "obj[method]( " + params.toArgString() + " );" );
            func( f.fv, type );

            //  If element test failed AND group error is off, return false
            if ( elem.validated == false && groupError == false ) return false;

            //  Clear error if field okay
            if ( elem.validated == true ) f.fv.revertError();
        }
    } //    end of element loop

    //  If group error, show it
    if ( groupError ) f.fv.showGroupError();

    //  Return false if errors found
    if ( f.fv.errors.length > 0 ) return false;

    //  Show pre-submission confirmation
    if ( bConfirm && !confirm( f.fv.config.confirmMsg ) )
    {
        if ( f.fv.config.confirmAbortMsg != '' ) alert( f.fv.config.confirmAbortMsg );
        return false;
    }

    //  Disable reset and/or submit buttons if requested
    if ( bDisable )
    {
        if ( typeof f.fv.config.submitButton == 'object' )
        {
            var sb, j = 0;
            while( sb = f.fv.config.submitButton[j++] )
            {
                if ( f.fv.elementExists( sb ) )
                {
                    f.elements[sb].disabled = true;
                }
            }
        }
        else if ( f.fv.elementExists( f.fv.config.submitButton ) )
        {
            f.elements[f.fv.config.submitButton].disabled = true;
        }
    }
    if ( bDisableR && f.fv.elementExists( f.fv.config.resetButton ) )
    {
        f.elements[f.fv.config.resetButton].disabled = true;
    }

    //  Successful Validation.  Submit form
    return true;

    function addEvent( elem, evt, obj, method, capture )
    {
        var self = elem;
        if ( typeof elem.attachEvent != 'undefined' )
        {
            elem.attachEvent( "on" + evt, function() { obj[method]( self ) } );
        }
        else if ( typeof elem.addEventListener != 'undefined' )
        {
            elem.addEventListener( evt, function() { obj[method]( self ) }, capture );
        }
        else if ( f.fv.config.eventOverride )
        {
            eleme['on' + evt] = function() { obj[method]( self ) };
        }
    }
}

/*  Constructor
------------------------------------------- */
function fValidate( f, errorMode, groupError )
{
    var self        = this;
    this.form       = f;
    this.errorMode  = errorMode;
    this.groupError = groupError;
    this.errors     = new Array();
    this.validated  = true;
    this.config     = new fValConfig();
    this.i18n       = fvalidate.i18n;

    //  Add reset action to clear visual error cues
    f.onreset = function()
    {
        var elem, i = 0;
        while ( elem = this.elements[i++] )
        {
            self.revertError( elem );
        }
    }

    addLabelProperties();

    //  Parses form and adds label properties to elements that have one specified
    function addLabelProperties()
    {
        //  Collect all label elements in form, init vars
        if ( typeof f.getElementsByTagName == 'undefined' ) return;
        var labels = f.getElementsByTagName( "label" );
        var label, i = j = 0;
        var elem;

        //  Loop through labels retrieved
        while ( label = labels[i++] )
        {
            //  For Opera 6
            if ( typeof label.htmlFor == 'undefined' ) return;

            //  Retrieve element
            elem = f.elements[label.htmlFor];
            if ( typeof elem == 'undefined' )
            {   //  No element found for label
                self.devError( [label.htmlFor], 'noLabel' );
            }
            else if ( typeof elem.label != 'undefined' )
            {   //  label property already added
                continue;
            }
            else if ( typeof elem.length != 'undefined' && elem.length > 1 && elem.nodeName != 'SELECT' )
            {   //  For arrayed elements
                for ( j = 0; j < elem.length; j++ )
                {
                    elem.item( j ).label = label;
                }
            }
            //  Regular label
            elem.label = label;
        }
    }
}

/*  Reset for another validation
------------------------------------------- */
fValidate.prototype._reset = function()
{
    this.errors     = new Array();
    this.showErrors = new Array();
}

/*  Checks if element exists in form
------------------------------------------- */
fValidate.prototype.elementExists = function( elemName )
{
    return Boolean( typeof this.form.elements[elemName] != 'undefined' );
}

/*  Receives error message and determines action
------------------------------------------- */
fValidate.prototype.throwError = function( args, which )
{
    var elem  = this.elem;

    //  Arrayed element?
    if ( typeof elem.name == 'undefined' )
    {
        elem = elem[0];
    }

    //  Bok requested AND element blank OR conditional validation?
    if ( elem.bok && this.isBlank() )
    {   //  skip
        elem.validated = true;
        return;
    }

    //  Part of a conditional validation?
    if ( elem.cv )
    {
        return;
    }

    //  Set failsafe to false
    elem.validated = false;

    //  Create error message
    which   = this.setArg( which, 0 );
    args    = this.setArg( args, [] );
    emsgElem = ( typeof this.elem.getAttribute == "undefined" ) ?
            this.elem[0]:
            this.elem;
    if ( emsgElem.getAttribute( this.config.emsg ) )
    {
        var error = emsgElem.getAttribute( this.config.emsg );
    }
    var error = this.translateMessage( args, this.i18n.errors[this.type][which] );

    //  Group error mode?
    if ( this.groupError )
    {
        //  Push error onto stack
        this.errors.push( {'elem':elem, 'msg': error} );
    }
    else
    {
        //  Process error message
        this.showError( error, false, emsgElem );

        var focusElem = ( typeof elem.fields != 'undefined' )?
            elem.fields[0]:
            elem;

        //  Focus and select elements, if possible
        this.selectFocus( focusElem );
    }
}


/*  Shows error message to user
------------------------------------------- */
fValidate.prototype.showError = function( emsg, last, elem )
{
    //  Set variables
    var self        = this,
        elem        = this.setArg( elem, this.elem ),
        isHidden    = Boolean( elem.type == 'hidden' ),
        label       = ( isHidden ) ? null : elem.label || null,
        emsg        = ( elem.getAttribute( this.config.emsg ) ) ? elem.getAttribute( this.config.emsg ).replace( /\\n/g, "\n" ) : emsg,
        errorClass  = this.config.errorClass,
        singleCSS   = this.config.useSingleClassNames;

    if ( typeof this.showErrors == 'undefined' ) this.showErrors = new Array();

    //  Determine which error modes to use
    switch( this.errorMode )
    {   //  This represents all possible combinations
        case 0  : alertError(); break;
        case 1  : inputError(); break;
        case 2  : labelError(); break;
        case 3  : appendError(); break;
        case 4  : boxError(); break;
        case 5  : inputError(); labelError(); break;
        case 6  : inputError(); appendError(); break;
        case 7  : inputError(); boxError(); break;
        case 8  : inputError(); alertError(); break;
        case 9  : labelError(); appendError(); break;
        case 10 : labelError(); boxError(); break;
        case 11 : labelError(); alertError(); break;
        case 12 : appendError(); boxError(); break;
        case 13 : appendError(); alertError(); break;
        case 14 : boxError(); alertError(); break;
        case 15 : inputError(); labelError(); appendError(); break;
        case 16 : inputError(); labelError(); boxError(); break;
        case 17 : inputError(); labelError(); alertError(); break;
        case 18 : inputError(); appendError(); boxError(); break;
        case 19 : inputError(); appendError(); alertError(); break;
        case 20 : inputError(); boxError(); alertError(); break;
        case 21 : labelError(); appendError(); boxError(); break;
        case 22 : labelError(); appendError(); alertError(); break;
        case 23 : appendError(); boxError(); alertError(); break;
        case 24 : inputError(); labelError(); appendError(); boxError(); break;
        case 25 : inputError(); labelError(); appendError(); alertError(); break;
        case 26 : inputError(); appendError(); boxError(); alertError(); break;
        case 27 : labelError(); appendError(); boxError(); alertError(); break;
        case 28 : inputError(); labelError(); appendError(); boxError(); alertError(); break;
    }
    //  Regular alert error
    function alertError()
    {
        if ( self.groupError ) self.showErrors.push( emsg );
        else alert( emsg );
        if ( last ) alert( self.i18n.groupAlert + self.showErrors.join( "\n\n- " ) );
    }
    //  Applies class to form element
    function inputError()
    {
        if ( ( typeof elem.length != 'undefined' && elem.length > 1 && elem.nodeName != 'SELECT' ) || isHidden )
        {
            var subelem, i = 0;
            while( subelem = ( isHidden ) ? elem.fields[i++] : elem.item( i++ ) )
            {
                if ( subelem.className != '' && singleCSS )
                {
                    subelem.revertClass = subelem.className;
                    subelem.className = errorClass;
                } else {
                    self.addCSSClass( subelem, errorClass );
                }
            }
        }
        else
        {
            if ( singleCSS )
            {
                elem.revertClass = elem.className;
                elem.className = errorClass;
            } else {
                self.addCSSClass( elem, errorClass );
            }
        }
    }
    //  Applies class to element's label
    function labelError()
    {
        if ( label == null ) return;
        if ( self.config.useSingleClassNames )
        {
            label.className = errorClass;
        } else {
            self.addCSSClass( label, errorClass );
        }

    }
    //  Appends error message to element's label
    function appendError()
    {
        if ( label == null || typeof label.innerHTML == 'undefined' ) return;
        if ( typeof label.original == 'undefined' )
            label.original = label.innerHTML;
        label.innerHTML = label.original + " - " + emsg.toHTML();
    }
    //  Appends Error message to pre-defined element
    function boxError()
    {
        if ( typeof self.boxError == 'undefined' ) self.boxError = document.getElementById( self.config.boxError );
        if ( self.boxError == null )
        {
            self.devError( [self.config.boxError], 'noBox' );
            return;
        }
        if ( typeof self.elem.name == 'undefined' || self.elem.name == "" )
        {
            self.devError( [self.elem[self.config.code]], 'missingName' );
            return;
        }
        var errorId = self.config.boxErrorPrefix + self.elem.name,
            errorElem;
        if ( errorElem = document.getElementById( errorId ) ) // short-circuit
        {
            errorElem.firstChild.nodeValue = emsg.toHTML();
        }
        else
        {
            errorElem = document.createHTMLElement( 'li', { id: errorId, 'innerHTML': emsg.toHTML(), title: self.i18n.boxToolTip } );
            self.boxError.appendChild( errorElem );
            errorElem.onclick = function()
            {
                var elem = self.form.elements[this.id.replace( self.config.boxErrorPrefix, "" )];
                if ( typeof elem.fields != 'undefined' ) elem = elem.fields[0];
                if ( typeof elem.select != 'undefined' ) elem.select();
                if ( typeof elem.focus != 'undefined' ) elem.focus();
            }
        }
        self.boxError.style.display = "block";
    }
}

/*  Handles element className manipulation
------------------------------------------- */
fValidate.prototype.removeCSSClass = function( elem, className )
{
    elem.className = elem.className.replace( className, "" ).trim();
}
fValidate.prototype.addCSSClass = function( elem, className )
{
    this.removeCSSClass( elem, className );
    elem.className = ( elem.className + " " + className ).trim();
}

/*  Processes errors in stack for group error mode
------------------------------------------- */
fValidate.prototype.showGroupError = function()
{
    for ( var error, firstElem, i = 0; ( error = this.errors[i] ); i++ )
    {
        if ( i == 0 ) firstElem = error.elem;
        this.elem = error.elem;
        this.showError( error.msg, Boolean( i == ( this.errors.length - 1 ) ) );
    }
    // var focusElem = ( typeof firstElem.fields != 'undefined' ) ? firstElem.fields[0] : firstElem ;
    // this.selectFocus( focusElem );
}

/*  Reverts any visible error notification upon event
------------------------------------------- */
fValidate.prototype.revertError = function( elem )
{
    elem = this.setArg( elem, this.elem );
    var isHidden    = Boolean( elem.type == 'hidden' ),
        errorClass  = this.config.errorClass,
        i           = 0,
        errorElem,
        subelem;

    if ( ( typeof elem.length != 'undefined' && elem.length > 1 && elem.nodeName != 'SELECT' ) || isHidden )
    {
        if ( isHidden && typeof elem.fields != 'undefined' )
        {
            while( subelem = ( isHidden ) ? elem.fields[i++] : elem.item( i++ ) )
            {
                if ( typeof subelem.revertClass != 'undefined' )
                {
                    subelem.className = subelem.revertClass;
                }
            }
        }
    } else {
        if ( this.config.useSingleClassNames )
        {
            if ( typeof subElement.revertClass != 'undefined' )
            {
                elem.className = elem.revertClass;
            }
        } else {
            this.removeCSSClass( elem, errorClass );
        }
    }
    if ( typeof elem.label != 'undefined' )
    {
        if ( this.config.useSingleClassNames )
        {
            elem.label.className = '';
        } else {
            this.removeCSSClass( elem.label, errorClass );
        }
        elem.label.innerHTML = ( elem.label.original || elem.label.innerHTML );
    }
    if ( typeof this.boxError != 'undefined' )
    {
        if ( typeof this.boxError.normalize != 'undefined' ) this.boxError.normalize();
        if ( errorElem = document.getElementById( this.config.boxErrorPrefix + elem.name ) )
        {
            this.boxError.removeChild( errorElem );
        }
        if ( this.boxError.childNodes.length == 0 ) this.boxError.style.display = "none";
    }
}

/*  Focus and select elements, if possible
------------------------------------------- */
fValidate.prototype.selectFocus = function( elem )
{
    if ( typeof elem.select != 'undefined' ) elem.select();
    if ( typeof elem.focus != 'undefined' )  elem.focus();
}

/*  Developer assistance method - shows error if validator/element-type mismatch
------------------------------------------- */
fValidate.prototype.typeMismatch = function()
{
    var pats = {
        'text':     'text|password|textarea',
        'ta':       'textarea',
        'hidden':   'hidden',
        's1':       'select-one',
        'sm':       'select-multiple',
        'select':   'select-one|select-multiple',
        'rg':       'radio',
        'radio':    'radio',
        'cb':       'checkbox',
        'file':     'file'
        };
    var fail        = false,
        expected    = new Array(),
        result = key = type = regex = "";
    for ( var i = 0; i < arguments.length; i++ )
    {
        type    = pats[arguments[i]];
        regex   = new RegExp( type );
        result  += ( regex.test( this.elem.type ) ) ? "1" : "0";
        key     += "0";
        expected.push( type );
    }
    if ( key ^ result == 0 )
    {
        this.devError( [this.elem.fName, this.elem.type, expected.join( "|" ).replace( /\|/g, this.i18n.or )], 'mismatch' );
        this.elem.validated = false;
        return true;
    }
    return false;
}

/*  Returns value(s) of reference element passed
------------------------------------------- */
fValidate.prototype.getValue = function( elem )
{
    switch ( elem.type )
    {
        case 'text' :
        case 'password' :
        case 'textarea' :
        case 'hidden' :
        case 'file' :
            return elem.value;
        case 'radio':
        case 'select-single':
            if ( typeof elem.length == 'undefined' )
            {
                return elem.value;
            } else {
                for ( var i = 0; i < elem.length; i++ )
                {
                    choice = ( elem.type == 'radio' ) ? "checked" : "selected";
                    if ( elem[i][choice] )
                    {
                        return elem[i].value;
                    }
                }
            }
        case 'select-multiple' :
        case 'checkbox' :
            if ( typeof elem.length == 'undefined' )
            {
                return elem.value
            } else {
                var returnValues = new Array();
                for ( var i = 0; i < elem.length; i++ )
                {
                    choice = ( elem.type == 'checkbox' ) ? "checked" : "selected";
                    if ( elem[i][choice] )
                    {
                        returnValues.push( elem[i].value );
                    }
                }
                return returnValues;
            }
        default: return null;
    }
}

/*  Generic argument setting method
------------------------------------------- */
fValidate.prototype.setArg = function( arg, def )
{
    return ( typeof arg == 'undefined' || arg == '' || arg == null ) ? def : arg;
}

/*  Blank checker.  Optional string argument for evaluating element other than current
------------------------------------------- */
fValidate.prototype.isBlank = function( el )
{
    var elem = this.form.elements[el] || this.elem;
    return Boolean( /^\s*$/.test( elem.value ) );
}

/*  Translates messages using language file
------------------------------------------- */
fValidate.prototype.translateMessage = function( args, format )
{
    var msg     = ""
    for ( var i = 0; i < format.length; i++ )
    {
            msg += ( typeof format[i] == 'number' ) ? args[format[i]] : format[i];
    }
    return msg;
}

/*  Throws developer errors
------------------------------------------- */
fValidate.prototype.devError = function( args, which )
{
    if ( typeof args == 'string' )
    {
        which = args;
        args = [];
    }
    which = this.setArg( which, this.type );
    var format = this.i18n.devErrors[which];
    var a = [
        this.i18n.devErrors.lines[0],
        '----------------------------------------------------------------------------------------------',
        this.translateMessage( args, format ),
        '----------------------------------------------------------------------------------------------',
        this.i18n.devErrors.lines[1]
        ];
    alert( a.join( "\n" ) );
}

/*  Throws specific developer error
------------------------------------------- */
fValidate.prototype.paramError = function( param, elemName )
{
    elemName = this.setArg( elemName, this.elem.name );
    this.devError( [param, this.type, elemName], 'paramError' );
}
/* Non-fValidate methods *****************************************/

/*  For easy creation of DOM nodes
------------------------------------------- */
document.createHTMLElement = function( elemName, attribs )
{
    if ( typeof document.createElement == 'undefined' ) return;
    var elem = document.createElement( elemName );
    if ( typeof attribs != 'undefined' )
    {
        for ( var i in attribs )
        {
            switch ( true )
            {
                case ( i == 'text' )  : elem.appendChild( document.createTextNode( attribs[i] ) ); break;
                case ( i == 'class' ) : elem.className = attribs[i]; break;
                default : elem.setAttribute( i, '' ); elem[i] = attribs[i];
            }
        }
    }
    return elem;
}

/*  Trims b items from the beginning of the array, e items from the end
------------------------------------------- */
Array.prototype.reduce = function( b, e )
{
    var a = new Array();
    var count = 0;
    for ( var i = b; i < this.length - e; i++ )
    {
        a[count++] = this[i];
    }
    return a;
}

/*  Returns array as argument-compatible string
------------------------------------------- */
Array.prototype.toArgString = function()
{
    var a = new Array();
    for ( var i = 0; i < this.length; i++ )
    {
        a.push( "'" + this[i] + "'" );
    }
    return a.toString();
}

/*  Prototype push if missing
------------------------------------------- */
if ( typeof Array.push == 'undefined' )
Array.prototype.push = function()
{
    var arg, i = 0;
    while( arg = arguments[i++] )
    {
        this[this.length] = arg;
    }
    return this.length;
}

/*  Returns last item of the array
------------------------------------------- */
Array.prototype.last = function()
{
    return this[this.length-1];
}

/*  Removes the follow charaters _[] from an elements name for human-reading
------------------------------------------- */
String.prototype.format = function()
{
    return this.replace( /\_/g, " ").replace( /\[|\]/g, "" );
}

/*  Replaces newline characters with XHTML BR tags
------------------------------------------- */
String.prototype.toHTML = function()
{
    return this.replace( /\n/g, "<br />" ).replace( /\t/g, "&nbsp;&nbsp;&nbsp;&nbsp;" );
}

/*  Trims leading and trailing whitespace from string
------------------------------------------- */
String.prototype.trim = function()
{
    return this.replace( /^\s+|\s+$/, "" );
}

/*  Escapes necessary charactes for string-generated regular expressions
------------------------------------------- */
String.prototype.toPattern = function()
{
    return this.replace( /([\.\*\+\{\}\(\)\<\>\^\$\\])/g, "\\$1" );
}
//  EOF