/*
 * jQuery Color Animations
 * Copyright 2007 John Resig
 * Released under the MIT and GPL licenses.
 */

(function(jQuery){

        // We override the animation for all of these color styles
        jQuery.each(['backgroundColor', 'borderBottomColor', 'borderLeftColor', 'borderRightColor', 'borderTopColor', 'color', 'outlineColor'], function(i,attr){
                jQuery.fx.step[attr] = function(fx){
                        if ( fx.state == 0 ) {
                                fx.start = getColor( fx.elem, attr );
                                fx.end = getRGB( fx.end );
                        }

                        fx.elem.style[attr] = "rgb(" + [
                                Math.max(Math.min( parseInt((fx.pos * (fx.end[0] - fx.start[0])) + fx.start[0]), 255), 0),
                                Math.max(Math.min( parseInt((fx.pos * (fx.end[1] - fx.start[1])) + fx.start[1]), 255), 0),
                                Math.max(Math.min( parseInt((fx.pos * (fx.end[2] - fx.start[2])) + fx.start[2]), 255), 0)
                        ].join(",") + ")";
                }
        });

        // Color Conversion functions from highlightFade
        // By Blair Mitchelmore
        // http://jquery.offput.ca/highlightFade/

        // Parse strings looking for color tuples [255,255,255]
        function getRGB(color) {
                var result;

                // Check if we're already dealing with an array of colors
                if ( color && color.constructor == Array && color.length == 3 )
                        return color;

                // Look for rgb(num,num,num)
                if (result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(color))
                        return [parseInt(result[1]), parseInt(result[2]), parseInt(result[3])];

                // Look for rgb(num%,num%,num%)
                if (result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(color))
                        return [parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55];

                // Look for #a0b1c2
                if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(color))
                        return [parseInt(result[1],16), parseInt(result[2],16), parseInt(result[3],16)];

                // Look for #fff
                if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(color))
                        return [parseInt(result[1]+result[1],16), parseInt(result[2]+result[2],16), parseInt(result[3]+result[3],16)];

                // Otherwise, we're most likely dealing with a named color
                return colors[jQuery.trim(color).toLowerCase()];
        }
        
        function getColor(elem, attr) {
                var color;

                do {
                        color = jQuery.curCSS(elem, attr);

                        // Keep going until we find an element that has color, or we hit the body
                        if ( color != '' && color != 'transparent' || jQuery.nodeName(elem, "body") )
                                break; 

                        attr = "backgroundColor";
                } while ( elem = elem.parentNode );

                return getRGB(color);
        };
        
        // Some named colors to work with
        // From Interface by Stefan Petre
        // http://interface.eyecon.ro/

        var colors = {
                aqua:[0,255,255],
                azure:[240,255,255],
                beige:[245,245,220],
                black:[0,0,0],
                blue:[0,0,255],
                brown:[165,42,42],
                cyan:[0,255,255],
                darkblue:[0,0,139],
                darkcyan:[0,139,139],
                darkgrey:[169,169,169],
                darkgreen:[0,100,0],
                darkkhaki:[189,183,107],
                darkmagenta:[139,0,139],
                darkolivegreen:[85,107,47],
                darkorange:[255,140,0],
                darkorchid:[153,50,204],
                darkred:[139,0,0],
                darksalmon:[233,150,122],
                darkviolet:[148,0,211],
                fuchsia:[255,0,255],
                gold:[255,215,0],
                green:[0,128,0],
                indigo:[75,0,130],
                khaki:[240,230,140],
                lightblue:[173,216,230],
                lightcyan:[224,255,255],
                lightgreen:[144,238,144],
                lightgrey:[211,211,211],
                lightpink:[255,182,193],
                lightyellow:[255,255,224],
                lime:[0,255,0],
                magenta:[255,0,255],
                maroon:[128,0,0],
                navy:[0,0,128],
                olive:[128,128,0],
                orange:[255,165,0],
                pink:[255,192,203],
                purple:[128,0,128],
                violet:[128,0,128],
                red:[255,0,0],
                silver:[192,192,192],
                white:[255,255,255],
                yellow:[255,255,0]
        };
        
})(jQuery);