//-------------------------------------------------------------------------------------------------------
// ClearTypeFadeTo / ClearTypeFadeIn / ClearTypeFadeOut
//
// Custom fade in and fade out functions for jQuery that will work around
// IE's bug with bold text in elements that have opacity filters set when
// also using Window's ClearType text rendering.
//
// New Parameter:
// bgColor    The color to set the background if none specified in the CSS (default is '#fff')
//
// Examples:
// $('div').ClearTypeFadeIn({ speed: 1500 });
// $('div').ClearTypeFadeIn({ speed: 1500, bgColor: '#ff6666', callback: myCallback });
// $('div').ClearTypeFadeOut({ speed: 1500, callback: function() { alert('Fade Out complete') } });
//
// Notes on the interaction of ClearType with DXTransforms in IE7
// http://blogs.msdn.com/ie/archive/2006/08/31/730887.aspx
(function($) {
    $.fn.ClearTypeFadeTo = function(options) {
        if (options)
                $(this)
                        .show()
                        .each(function() {
                                if (jQuery.browser.msie) {
                                        // Save the original background color
                                        $(this).attr('oBgColor', $(this).css('background-color'));
                                        // Set the bgColor so that bold text renders correctly (bug with IE/ClearType/bold text)
                                        $(this).css({ 'background-color': (options.bgColor ? options.bgColor : '#fff') })
                                }
                        })
                        .fadeTo(options.speed, options.opacity, function() {
                                if (jQuery.browser.msie) {
                                        // ClearType can only be turned back on if this is a full fade in or
                                        // fade out. Partial opacity will still have the problem because the
                                        // filter style must remain. So, in the latter case, we will leave the
                                        // background color and 'filter' style in place.
                                        if (options.opacity == 0 || options.opacity == 1) {
                                                // Reset the background color if we saved it previously
                                                $(this).css({ 'background-color': $(this).attr('oBgColor') }).removeAttr('oBgColor');
                                                // Remove the 'filter' style to restore ClearType functionality.
                                                $(this).get(0).style.removeAttribute('filter');
                                        }
                                }
                                if (options.callback != undefined) options.callback();
                        });
    };

    $.fn.ClearTypeFadeIn = function(options) {
        if (options)
                $(this)
                        .css({ opacity: 0 })
                        .ClearTypeFadeTo({ speed: options.speed, opacity: 1, callback: options.callback });
    };

    $.fn.ClearTypeFadeOut = function(options) {
        if (options)
                $(this)
                        .css({ opacity: 1 })
                        .ClearTypeFadeTo({ speed: options.speed, opacity: 0, callback: options.callback });
    };
})(jQuery);