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

// 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 = jQuery.getColor( fx.elem, attr );
			fx.end = jQuery.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]
jQuery.getRGB = function(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()];
}

jQuery.getColor = function(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 jQuery.getRGB(color);
};