// <![CDATA[
    
    /*
     * Copyright (c) 2010 Romain Ruetschi <romain.ruetschi@gmail.com>
     * 
     * Permission is hereby granted, free of charge, to any person obtaining
     * a copy of this software and associated documentation files (the
     * "Software"), to deal in the Software without restriction, including
     * without limitation the rights to use, copy, modify, merge, publish,
     * distribute, sublicense, and/or sell copies of the Software, and to
     * permit persons to whom the Software is furnished to do so, subject to
     * the following conditions:
     * 
     * The above copyright notice and this permission notice shall be
     * included in all copies or substantial portions of the Software.
     * 
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     */
    
    ( function( $ )
    {
        $.fn.placeHoldize = ( function()
        {
            function _placeHoldize( force )
            {
                // Store a reference to the current jQuery element.
                var $this = $( this );
                
                // As Webkit is the only rendering engine which supports
                // the "placeholder" attributes on the "input" tag and as
                // jQuery doesn't provide an easy way (even through jQuery.support)
                // to detect the support of this attribute, jQuery.placeHoldize
                // use $.browser even if it against the recommendations, sorry.
                // It also checks if the current element have this attribute
                // and that it's not a textarea (as Safari does only support this
                // attribute on input elements).
                if( !force && ( $.browser.webkit || !$this.attr( 'placeholder' ) ) && !$this.is( 'textarea' ) )
                {
                    // There is no need for this plugin.
                    return;
                }
                    
                // Store a reference to the initial "placeholder"'s value.
                var placeHolder = $this.attr( 'placeholder' );
                
                // Copy the "placeholder" attribute's value to the "value" attribute.
                $this.val( placeHolder );
                
                // Remove the "placeholder" as it is no longer used
                // and add a "placeholdized" class to be able to reference
                // these elements later.
                $this.removeAttr( 'placeholder' )
                     .addClass( 'placeholdized' )
                     .addClass( 'placeholder-visible' );
                
                // On focus
                $this.focus( function()
                {
                    // Store a local reference to the current jQuery element to
                    // ensure that this reference will be stored only once.
                    var $this = $( this );
                    
                    // If the element's value is equal to the previously setted
                    // placeholder's value:
                    if( $this.val() === placeHolder )
                    {
                        // Empty the value.
                        $this.val( '' );
                        
                        // Swap some classes to be able to style the element.
                        $this.removeClass( 'placeholder-visible' )
                             .addClass( 'placeholder-hidden' );
                    }
                } );
                
                // On focus
                $this.blur( function()
                {
                    // Store a local reference to the current jQuery element to
                    // ensure that this reference will be stored only once.
                    var $this = $( this );
                    
                    // If the element's value is empty:
                    if( $this.val() === '' )
                    {
                        // Restore the placeholder's value.
                        $this.val( placeHolder );
                        
                        // Swap some classes to be able to style the element.
                        $this.removeClass( 'placeholder-hidden' )
                             .addClass( 'placeholder-visible' );
                    }
                } );
            }
            
            function _emptyFormOnSubmit( $elements )
            {
                var $forms = $elements.closest( 'form' );
                    
                $forms.submit( function()
                {
                    var $this = $( this );
                    
                    // This check avoid processing more than once the same form.
                    if( $this.data( 'placeHoldize.submitHandlerCalled' ) ) {
                        
                        return;
                    }
                    
                    $this.find( '.placeholder-visible' )
                         .val( '' )
                         .data( 'placeHoldize.submitHandlerCalled', true );
                } );
                
                return true;
            }
            
            return function( force )
            {
                // Apply the _placeHoldize function on every element.
                this.each( function()
                {
                    _placeHoldize.call( this, force );
                } );
                
                // Empty the "value" attribute before the form is submitted to fully mimics the
                // HTML5 "placeholder" attribute behavior.
                _emptyFormOnSubmit( this );
                
                return this;
            };
        
        } )();
        
    } )( jQuery );
    
// ]]>