/**
*	@name							Defaultvalue
*	@descripton						Gives value to empty inputs
*	@version						1.1
*	@requires						Jquery 1.2.6+
*
*	@author							Jan Jarfalk
*	@author-email					jan.jarfalk@unwrongest.com
*	@author-website					http://www.unwrongest.com
*
*	@licens							MIT License - http://www.opensource.org/licenses/mit-license.php
*
*	@param {String} str				The default value
*/

(function(jQuery) {
    jQuery.fn.extend({
        defaultValue: function(str) {
            return this.each(function() {

                var $input = $(this),
					defaultValue = str || $input.attr('rel');


                if ($input.attr('type') == 'password') {
                    handlePasswordInput();
                } else {
                    handleTextInputs();
                }

                function handlePasswordInput() {

                    // Create clone and switch
                    var $clone = createClone();
                    $clone.insertAfter($input);
                    $input.hide();

                    // Events for password fields
                    $input.blur(function() {
                        if ($input.val().length <= 0) {
                            $clone.show();
                            $input.hide();
                        }
                    });

                }

                function handleTextInputs() {

                    // Set current state
                    setState();

                    // Events for non-password fields
                    $input.keypress(function() {
                        if ($input.val().length > 0) {
                            setState();
                        }
                    }).blur(setState).focus(function() {
                        $input.val() == defaultValue && $input.val('');
                    });

                    // Remove default values from fields on submit
                    $input.closest("form").submit(function() {
                        $input.val() == defaultValue && $input.val('');
                    });

                }

                function setState() {
                    val = jQuery.trim($input.val());
                    if (val.length <= 0 || val == defaultValue) {
                        $input.val(defaultValue).addClass('empty');
                    } else {
                        $input.removeClass('empty');
                    }
                }


                // Create a text clone of password fields
                function createClone() {

                    var $el = jQuery("<input />").attr({
                        'type': 'text',
                        'value': defaultValue,
                        'class': $input.attr('class') + ' empty',
                        'style': $input.attr('style'),
                        'tabindex': $input.attr('tabindex')
                    });

                    $el.focus(function() {

                        // Hide text clone and show real password field
                        $el.hide();
                        $input.show();

                        // Webkit and Moz need some extra time
                        // BTW $input.show(0,function(){$input.focus();}); doesn't work.
                        setTimeout(function() {
                            $input.focus();
                        }, 1);

                    });

                    return $el;
                }

            });
        }
    });
})(jQuery);