// wrap as a jQuery plugin and pass jQuery in to our anoymous function
(function ($) {
    $.fn.cross = function (options) {
        return this.each(function (i) {
            // cache the copy of jQuery(this) - the start image
            var $$ = $(this);

            // get the target from the backgroundImage + regexp
            var target = $$.css('backgroundImage').replace(/^url|[\(\)'"]/g, '');

            // nice long chain: wrap img element in span
            $$.wrap('<span style="position: relative;"></span>')
            // change selector to parent - i.e. newly created span
            .parent()
            // prepend a new image inside the span
            .prepend('<img>')
            // change the selector to the newly created image
            .find(':first-child')
            // set the image to the target
            .attr('src', target);
            // the CSS styling of the start image needs to be handled
            // differently for different browsers

            if ($.browser.mozilla) {
                $$.css({
                    'position' : 'absolute',
                    'left' : 0,
                    'background' : '',
                    'top' : this.offsetTop
                });
            } else if ($.browser.opera && $.browser.version < 9.5) {
                // Browser sniffing is bad - however opera < 9.5 has a render bug
                // so this is required to get around it we can't apply the 'top' : 0
                // separately because Mozilla strips the style set originally somehow...
                $$.css({
                    'position' : 'absolute',
                    'left' : 0,
                    'background' : '',
                    'top' : "0"
                });
            } else { 
                if($.browser.msie && $.browser.version == '7.0'){
                    $$.css({
                        'position' : 'absolute',
                        'left' : 0,
                        'background' : '',
                        'top' : 0
                    });
                } else {
                    if($.browser.version == '8.0') {
                        $$.css({
                            'position' : 'absolute',
                            'left' : 0,
                            'background' : '',
                            'top' : this.offsetTop
                        });
                    } else {
                        $$.css({
                            'position' : 'absolute',
                            'left' : 0,
                            'background' : '',
                            'top' : -38
                        });
                    }
                }
                
                
            }

            // similar effect as single image technique, except using .animate
            // which will handle the fading up from the right opacity for us
            $$.hover(function () {
                $$.stop().animate({
                    opacity: 0
                }, 500);

            }, function () {
                $$.stop().animate({
                    opacity: 1
                }, 500);

            });
        });
    };

    $.fn.selected = function (options) {
        return this.each(function (i) {
            // cache the copy of jQuery(this) - the start image
            var $$ = $(this);

            // get the target from the backgroundImage + regexp
            var target = $$.css('backgroundImage').replace(/^url|[\(\)'"]/g, '');

            // nice long chain: wrap img element in span
            $$.wrap('<span style="position: relative;"></span>')
            // change selector to parent - i.e. newly created span
            .parent()
            // prepend a new image inside the span
            .prepend('<img>')
            // change the selector to the newly created image
            .find(':first-child')
            // set the image to the target
            .attr('src', target);
            // the CSS styling of the start image needs to be handled
            // differently for different browsers


            if ($.browser.mozilla) {
                $$.css({
                    'position' : 'absolute',
                    'left' : 0,
                    'background' : '',
                    'top' : this.offsetTop
                });
            } else if ($.browser.opera && $.browser.version < 9.5) {
                // Browser sniffing is bad - however opera < 9.5 has a render bug
                // so this is required to get around it we can't apply the 'top' : 0
                // separately because Mozilla strips the style set originally somehow...
                $$.css({
                    'position' : 'absolute',
                    'left' : 0,
                    'background' : '',
                    'top' : "0"
                });
            } else { // Safari
                if($.browser.msie && $.browser.version == '7.0'){
                    $$.css({
                        'position' : 'absolute',
                        'left' : 0,
                        'background' : '',
                        'top' : 0
                    });
                } else {
                    if($.browser.version == '8.0') {
                        $$.css({
                            'position' : 'absolute',
                            'left' : 0,
                            'background' : '',
                            'top' : this.offsetTop
                        });
                    } else {
                        $$.css({
                            'position' : 'absolute',
                            'left' : 0,
                            'background' : '',
                            'top' : -38
                        });
                    }
                }
            }

            // similar effect as single image technique, except using .animate
            // which will handle the fading up from the right opacity for us
            $$.fadeTo(0,0);
        });
    };


    $.fn.crossbs = function (options) {
        return this.each(function (i) {
            // cache the copy of jQuery(this) - the start image
            var $$ = $(this);

            // get the target from the backgroundImage + regexp
            var target = $$.css('backgroundImage').replace(/^url|[\(\)'"]/g, '');

            // nice long chain: wrap img element in span
            $$.wrap('<span style="position: relative;"></span>')
            // change selector to parent - i.e. newly created span
            .parent()
            // prepend a new image inside the span
            .prepend('<img>')
            // change the selector to the newly created image
            .find(':first-child')
            // set the image to the target
            .attr('src', target);
            // the CSS styling of the start image needs to be handled
            // differently for different browsers

            if ($.browser.mozilla) {
                $$.css({
                    'position' : 'absolute',
                    'left' : 0,
                    'background' : '',
                    'top' : this.offsetTop
                });
            } else if ($.browser.opera && $.browser.version < 9.5) {
                // Browser sniffing is bad - however opera < 9.5 has a render bug
                // so this is required to get around it we can't apply the 'top' : 0
                // separately because Mozilla strips the style set originally somehow...
                $$.css({
                    'position' : 'absolute',
                    'left' : 0,
                    'background' : '',
                    'top' : "0"
                });
            } else {
                if($.browser.msie && $.browser.version == '7.0'){
                    $$.css({
                        'position' : 'absolute',
                        'left' : 0,
                        'background' : '',
                        'top' : 0
                    });
                } else {
                    if($.browser.version == '8.0') {
                        $$.css({
                            'position' : 'absolute',
                            'left' : 0,
                            'background' : '',
                            'top' : this.offsetTop
                        });
                    } else {
                        $$.css({
                            'position' : 'absolute',
                            'left' : 0,
                            'background' : '',
                            'top' : -4
                        });
                    }
                }


            }

            // similar effect as single image technique, except using .animate
            // which will handle the fading up from the right opacity for us
            $$.hover(function () {
                $$.stop().animate({
                    opacity: 0
                }, 500);

            }, function () {
                $$.stop().animate({
                    opacity: 1
                }, 500);

            });
        });
    };

})(jQuery);

// note that this uses the .bind('load') on the window object, rather than $(document).ready()
// because .ready() fires before the images have loaded, but we need to fire *after* because
// our code relies on the dimensions of the images already in place.
$(window).bind('load', function () {
    $('img.fade').cross();
    $('img.bs').crossbs();
    $('img.selected').selected();
});