/*
* 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);