/**
 * jQuery Plugin colorBlend v1.5.0
 * Requires jQuery 1.2.1+ (Not tested with earlier versions).
 * Based on the Fade plugin http://plugins.jquery.com/project/fade
 * Code losely based on the Cycle plugin http://plugins.jquery.com/project/cycle It was a great resource in creating this one) 
 * Copyright (c) 2007-2008 Aaron E. [jquery at happinessinmycheeks dot com] 
*/
  
(function($) {
	var ver = '1.5.0';
	var gObj = [];
	var q = 0;
	$.fn.colorBlend = function(opts) {
		if(!opts) { opts = [{}]; }
		
		var arrySelected = [];
		this.each(function() {
			arrySelected[arrySelected.length] = $.data($(this).get(0));
		});

		return this.each(function() {
			var uId = $.data($(this).get(0));
			var $cont = $(this);
			var isFlagAll = false;
			
			if(udf(gObj[uId])) {
				gObj[uId] = [];
			}

			$.each(opts, function(i, v){
				var isFound = false;
				opts[i] = $.extend({}, $.fn.colorBlend.defaults, opts[i]);
				opts[i].queue = [];
				opts[i].internals = $.extend({}, $.fn.colorBlend.internals);
				opts[i].parent = $cont;

				if(opts[i].param == "all") {
					isFlagAll = FlagAll(opts[i].action);
				}
								
				$.each(gObj[uId], function(j, w) {
					if(gObj[uId][j].param.toLowerCase() == opts[i].param.toLowerCase() 
					|| opts[i].param.toLowerCase() == 'all') {
						if(!gObj[uId][j].internals.animating) {
							gObj[uId].splice(j, 1, setOptions(opts[i]));
						}
						isFound = true;
						return false;
					}
				});
				
				if(!isFound) {
					gObj[uId].push(setOptions(opts[i]));
				}
			});

			if(!isFlagAll) {
				$.each(gObj[uId], function(i, v){
					var ani = gObj[uId][i].internals.animating;
					var pausedOrStopped = gObj[uId][i].internals.isPOrS;
					
					$.each(opts, function(j, w) {
						if(gObj[uId][i].param.toLowerCase() != opts[j].param.toLowerCase()) {
							return true;
						}

						switch(opts[j].action) {
							case "stop":
							case "pause":
								clearTimeout(gObj[uId][i].internals.tId);
								gObj[uId][i].internals.isPOrS = true;
								pausedOrStopped = true;
								if(opts[j].action == "stop") {
									gObj[uId][i].internals.animating = false;
								}
							break;
							case "resume":
								ani = true;
								pausedOrStopped = false;
								gObj[uId][i].internals.isPOrS = false;
								go(gObj[uId][i]);
							break;
							default:
								if(!ani) {
									gObj[uId][i] = setOptions(opts[j]);
								} else {
									if(gObj[uId][i].isQueue && gObj[uId][i].cycles > 0) {
										gObj[uId][i].queue.push(setOptions(opts[j]));
									}
								}
							break;
						}
					});
					
					if(!ani && !pausedOrStopped) {
						go(gObj[uId][i]);
					} 
				});
			}
		});
		
		function FlagAll(action) {
			var res = false;
			$.each(arrySelected, function(i, v) {
				var curObj = gObj[v];
				$.each(curObj, function(j, w) {
					switch(action) {
						case "stop":
						case "pause": 
							res = true;
							clearTimeout(curObj[j].internals.tId);
							curObj[j].internals.isPOrS = true;
							if(action == "stop") {
								curObj[j].internals.animating = false;
							}
						break;
						case "resume": 
							res = true;
							curObj[j].internals.isPOrS = false;
							go(curObj[j]);
						break;
					}
				});
			});

			return res;
		};
	};

	$.fn.colorBlend.defaults = {
		fps:30,
		duration:1000,
		param:"background-color",
		cycles:0,
		random:false,
		isFade:true,
		fromColor:"current",
		toColor:"opposite",
		alpha:"100,100",
		action:"",
		isQueue:true
	};
	
	$.fn.colorBlend.internals = {
		aniArray:  [],
		alphaArry: [],
		pos: 0,
		currentCycle: 0,
		direction: 1,
		frames: 0,
		delay: 0,
		fromRand: false,
		toRand: false,
		animating: false,
		isAlpha: false,
		tId: 0,
		isPOrS: false
	};

	function setOptions(Opts) {
		if(!Opts.internals.animating) {
			var alphaParam = Opts.alpha.split(",");

			switch(Opts.fromColor.toLowerCase()) {
				case "current":
					Opts.fromColor = Opts.parent.css(Opts.param);
					break;
				case "parent":
				case "transparent":
					Opts.fromColor = checkParentColor(Opts.parent, Opts.param);
					break;
				case "opposite":
					Opts.fromColor = OppositeColor(Opts.toColor);
					break;
				case "random":
					Opts.fromColor = rndColor();
					Opts.internals.fromRand = true;
					break;
			}
				
			switch(Opts.toColor.toLowerCase()) {
				case "current":
					Opts.toColor = Opts.parent.css(Opts.param);
					break;
				case "parent":
				case "transparent":
					Opts.toColor = checkParentColor(Opts.parent, Opts.param);
					break;
				case "opposite":
					Opts.toColor = OppositeColor(Opts.fromColor);
					break;
				case "random":
					Opts.toColor = rndColor();
					Opts.internals.toRand = true;
					break;
			}

			if(Opts.toColor == Opts.fromColor) {
				Opts.parent.css(Opts.param, Opts.toColor);
			}

			Opts.internals.currentCycle = Opts.cycles > 0 ? Opts.cycles : 0;
			//hier ;-)
			Opts.internals.frames = Math.floor(Opts.fps * (Opts.duration / 50));
			Opts.internals.delay = Math.floor(Opts.duration / (Opts.internals.frames+1));

			if(Opts.random) {
				Opts.isFade = false;
				Opts.fromColor = rndColor();
				Opts.toColor = rndColor();
			}
				
			if(Opts.isFade) {
				Opts.internals.currentCycle = Opts.internals.currentCycle * 2;
				Opts.internals.delay = Math.floor(Opts.internals.delay / 1000);
				Opts.internals.frames = Math.floor(Opts.internals.frames / 2);
			}					
				
			if((alphaParam.length == 1 && alphaParam[0] != 100)
			|| (alphaParam.length == 2 && (alphaParam[0] != 100 || alphaParam[1] != 100))) { 
				if(alphaParam.length == 2) {
					if(parseInt(alphaParam[0]) != parseInt(alphaParam[1])) {
						Opts.internals.isAlpha = true;
						Opts.internals.alphaArry = buildAlphaAni(alphaParam[0], alphaParam[1], Opts.internals);
					} else {
						setAlpha(Opts.parent, alphaParam[0]);
					}
				} else { 
					if(parseInt(alphaParam[0])) {
						setAlpha(Opts.parent, alphaParam[0]);
					}
				}
			}
			
			Opts.internals.aniArray = buildAnimation(Opts.fromColor, Opts.toColor, Opts.internals);
			return Opts;
		}
	}

	function go(Opts) {
		if(!Opts.internals.isPOrS) {
			var sendStop = false;

			Opts.internals.animating = true;

			if(Opts.fromColor != Opts.toColor) {
				Opts.parent.css(Opts.param, Opts.internals.aniArray[Opts.internals.pos]);
			} 
			
			if(Opts.internals.isAlpha) {
				setAlpha(Opts.parent, Opts.internals.alphaArry[Opts.internals.pos]);
			}

			Opts.internals.pos += Opts.internals.direction; 

			if(Opts.internals.pos < 0 || Opts.internals.pos >= Opts.internals.aniArray.length) {
				Opts.internals.currentCycle -= Opts.internals.currentCycle != 0 ? 1 : 0;
				Opts.internals.direction = Opts.internals.direction * -1;
				Opts.internals.pos += Opts.internals.direction;

				if(Opts.random) {
					Opts.fromColor = Opts.toColor;
					Opts.toColor = rndColor();
					Opts.internals.aniArray = buildAnimation(Opts.fromColor, Opts.toColor, Opts.internals);
				}

				if(!Opts.isFade) {
					Opts.internals.direction = 1;
					Opts.internals.pos = 0;
				}

				if(Opts.internals.currentCycle == 0 && Opts.cycles > 0) {
					sendStop = true;
				}
			}

			if(!sendStop) {
				Opts.internals.tId = setTimeout(function(){go(Opts);}, Opts.internals.delay);
			} else {
				clearTimeout(Opts.internals.tId);
				Opts.internals.tId = 0;
				if(Opts.isQueue && Opts.queue.length > 0) {
					var tmp = Opts.queue.concat();
					tmp.splice(0,1);
					Opts = $.extend(Opts, Opts.queue.shift());
					Opts.queue = tmp.concat();
					Opts.internals.tId = setTimeout(function(){go(Opts);}, Opts.internals.delay);
				} else {
					Opts.internals.animating = false;
					Opts.internals.isPOrS = true;
				}
			}
		}
	}

	function setAlpha(elm, opacity) {
		elm.css("opacity", parseFloat(opacity / 100));
	}

	function buildAlphaAni(startOpacity, endOpacity, intOpts) {
		var frames = intOpts.frames;
		var frame = 0;
		var res = [];
		var h = 0;
		for(frame = 0;frame<=frames;frame++) {
			h = Math.floor(startOpacity * ((frames-frame)/frames) + endOpacity * (frame/frames));
			res[res.length] = h
		}
		
		if(h != endOpacity) {
			res[res.length] = parseInt(endOpacity);
		}
		
		return res;
	}

	function buildAnimation(startColor, endColor, intOpts) {
		var frames = intOpts.frames;
		var frame = 0;
		var r,g,b,h;
		var res = [];

		startColor = toHexColor(startColor);
		endColor = toHexColor(endColor);		
		var fc = ColorHexToDec(startColor).split(', '); 
		var tc = ColorHexToDec(endColor).split(', ');
		
		for(frame = 0;frame<=frames;frame++) {
			r = Math.floor(fc[0] * ((frames-frame)/frames) + tc[0] * (frame/frames));
			g = Math.floor(fc[1] * ((frames-frame)/frames) + tc[1] * (frame/frames));
			b = Math.floor(fc[2] * ((frames-frame)/frames) + tc[2] * (frame/frames));
			h = ColorDecToHex(r, g, b);
			res[res.length] = h;
		}

		if(h.toLowerCase() != endColor.toLowerCase()) {
			res[res.length] = endColor;
		}
		
		return res;
	}

	function getHexColorByName(colorName) {
		return allColorsByName()[colorName.toLowerCase()];
	}

	function allColorsByName() {
		var colors = [];
		colors["aliceblue"] = "F0F8FF"; colors["antiquewhite"] = "FAEBD7"; colors["aqua"] = "00FFFF"; colors["aquamarine"] = "7FFFD4";
		colors["azure"] = "F0FFFF"; colors["beige"] = "F5F5DC"; colors["bisque"] = "FFE4C4"; colors["black"] = "000000";
		colors["blanchedalmond"] = "FFEBCD"; colors["blue"] = "0000FF"; colors["blueviolet"] = "8A2BE2"; colors["brown"] = "A52A2A";
		colors["burlywood"] = "DEB887"; colors["cadetblue"] = "5F9EA0"; colors["chartreuse"] = "7FFF00"; colors["chocolate"] = "D2691E";
		colors["coral"] = "FF7F50"; colors["cornflowerblue"] = "6495ED"; colors["cornsilk"] = "FFF8DC"; colors["crimson"] = "DC143C";
		colors["cyan"] = "00FFFF"; colors["darkblue"] = "00008B"; colors["darkcyan"] = "008B8B"; colors["darkgoldenrod"] = "B8860B";
		colors["darkgray"] = "A9A9A9"; colors["darkgreen"] = "006400"; colors["darkkhaki"] = "BDB76B"; colors["darkmagenta"] = "8B008B";
		colors["darkolivegreen"] = "556B2F"; colors["darkorange"] = "FF8C00"; colors["darkorchid"] = "9932CC"; colors["darkred"] = "8B0000";
		colors["darksalmon"] = "E9967A"; colors["darkseagreen"] = "8FBC8F"; colors["darkslateblue"] = "483D8B"; colors["darkslategray"] = "2F4F4F";
		colors["darkturquoise"] = "00CED1"; colors["darkviolet"] = "9400D3"; colors["deeppink"] = "FF1493"; colors["deepskyblue"] = "00BFFF";
		colors["dimgray"] = "696969"; colors["dodgerblue"] = "1E90FF"; colors["firebrick"] = "B22222"; colors["floralwhite"] = "FFFAF0";
		colors["forestgreen"] = "228B22"; colors["fuchsia"] = "FF00FF"; colors["gainsboro"] = "DCDCDC"; colors["ghostwhite"] = "F8F8FF";
		colors["gold"] = "FFD700"; colors["goldenrod"] = "DAA520"; colors["gray"] = "808080"; colors["green"] = "008000";
		colors["greenyellow"] = "ADFF2F"; colors["honeydew"] = "F0FFF0"; colors["hotpink"] = "FF69B4"; colors["indianred"] = "CD5C5C";
		colors["indigo"] = "4B0082"; colors["ivory"] = "FFFFF0"; colors["khaki"] = "F0E68C"; colors["lavender"] = "E6E6FA";
		colors["lavenderblush"] = "FFF0F5"; colors["lawngreen"] = "7CFC00"; colors["lemonchiffon"] = "FFFACD"; colors["lightblue"] = "ADD8E6";
		colors["lightcoral"] = "F08080"; colors["lightcyan"] = "E0FFFF"; colors["lightgoldenrodyellow"] = "FAFAD2"; colors["lightgreen"] = "90EE90";
		colors["lightgrey"] = "D3D3D3"; colors["lightpink"] = "FFB6C1"; colors["lightsalmon"] = "FFA07A"; colors["lightseagreen"] = "20B2AA";
		colors["lightskyblue"] = "87CEFA"; colors["lightslategray"] = "778899"; colors["lightsteelblue"] = "B0C4DE"; colors["lightyellow"] = "FFFFE0";
		colors["lime"] = "00FF00"; colors["limegreen"] = "32CD32"; colors["linen"] = "FAF0E6"; colors["magenta"] = "FF00FF";
		colors["maroon"] = "800000"; colors["mediumaquamarine"] = "66CDAA"; colors["mediumblue"] = "0000CD"; colors["mediumorchid"] = "BA55D3";
		colors["mediumpurple"] = "9370DB"; colors["mediumseagreen"] = "3CB371"; colors["mediumslateblue"] = "7B68EE"; colors["mediumspringgreen"] = "00FA9A";
		colors["mediumturquoise"] = "48D1CC"; colors["mediumvioletred"] = "C71585"; colors["midnightblue"] = "191970"; colors["mintcream"] = "F5FFFA";
		colors["mistyrose"] = "FFE4E1"; colors["moccasin"] = "FFE4B5"; colors["navajowhite"] = "FFDEAD"; colors["navy"] = "000080";
		colors["oldlace"] = "FDF5E6"; colors["olive"] = "808000"; colors["olivedrab"] = "6B8E23"; colors["orange"] = "FFA500";
		colors["orangered"] = "FF4500"; colors["orchid"] = "DA70D6"; colors["palegoldenrod"] = "EEE8AA"; colors["palegreen"] = "98FB98";
		colors["paleturquoise"] = "AFEEEE"; colors["palevioletred"] = "DB7093"; colors["papayawhip"] = "FFEFD5"; colors["peachpuff"] = "FFDAB9";
		colors["peru"] = "CD853F"; colors["pink"] = "FFC0CB"; colors["plum"] = "DDA0DD"; colors["powderblue"] = "B0E0E6";
		colors["purple"] = "800080"; colors["red"] = "FF0000"; colors["rosybrown"] = "BC8F8F"; colors["royalblue"] = "4169E1";
		colors["saddlebrown"] = "8B4513"; colors["salmon"] = "FA8072"; colors["sandybrown"] = "F4A460"; colors["seagreen"] = "2E8B57";
		colors["seashell"] = "FFF5EE"; colors["sienna"] = "A0522D"; colors["silver"] = "C0C0C0"; colors["skyblue"] = "87CEEB";
		colors["slateblue"] = "6A5ACD"; colors["slategray"] = "708090"; colors["snow"] = "FFFAFA"; colors["springgreen"] = "00FF7F";
		colors["steelblue"] = "4682B4"; colors["tan"] = "D2B48C"; colors["teal"] = "008080"; colors["thistle"] = "D8BFD8";
		colors["tomato"] = "FF6347"; colors["turquoise"] = "40E0D0"; colors["violet"] = "EE82EE"; colors["wheat"] = "F5DEB3";
		colors["white"] = "FFFFFF"; colors["whitesmoke"] = "F5F5F5"; colors["yellow"] = "FFFF00"; colors["yellowgreen"] = "9ACD32";
		return colors;
	}

	function OppositeColor(value) {
		value = toHexColor(value).split("#").join('').split('');
		var hexVals = "0123456789ABCDEF";
		var revHexs = hexVals.split('').reverse().join('');
		var currentPos;
		for(var i = 0;i < value.length;i++) {
			currentPos = hexVals.indexOf(value[i]);
			value[i] = revHexs.substring(currentPos,currentPos+1);
		}
		
		return "#" + value.join('');
	}

	function ColorDecToHex(r,g,b) {
		r = r.toString(16); if (r.length == 1) r = '0' + r;
		g = g.toString(16); if (g.length == 1) g = '0' + g; 
		b = b.toString(16); if (b.length == 1) b = '0' + b;
		return "#" + r + g + b;
	}

	function ColorHexToDec(value) {
		var res = [];
		value = value.replace("#", "");
		for(var i = 0;i < 3;i++) {
			res[res.length] = parseInt(value.substr(i * 2, 2), 16);
		}
		return res.join(', ');
	}

	function toHexColor(value) {
		value = udf(value) ? "#FFFFFF" : value;
		if(value.indexOf("rgb(") > -1) {
			value = value.replace("rgb(","").replace(")", "");
			value = eval('ColorDecToHex(' + value + ')'); 
		} else {
			if(value.indexOf("#") > -1) {
				value = value.replace("#", "");
				if(value.length == 3) {
					var s = value.split('');
					$.each(s, function(i) {
						s[i] = s[i] + s[i];
					});
					value = s.join('');
				}
			} else {
				var colName = getHexColorByName(value);
				value = !udf(colName) ? colName : "FFFFFF";
			}
		}
		
		return "#" + value.toUpperCase().split('#').join('');
	}

	function checkParentColor(elm, param) {
		/*White is chosen as default to eliminate issues between IE and FF*/
		var pColr = "#ffffff";
		
		$(elm).parents().each(function(){
			var result = $(this).css(param);
			if(result != 'transparent') {
				pColr = result;
				return false;
			}
		});
		
		return pColr;
	}

	function rndColor() {
		var res = [];
		var cm;
		for(var i = 0;i < 3;i++) {
			cm = randRange(0, 255).toString(16); 
			if (cm.length == 1) cm = '0' + cm;
			res[res.length] = cm;
		}
		return "#" + res.join('');
	}

	function randRange(lowVal, highVal) {
		 return Math.floor(Math.random()*(highVal-lowVal+1))+lowVal;
	}

	function udf(val) {
		return typeof(val) == 'undefined' ? true : false;
	}
})(jQuery);