// @name      The Fade Anything Technique
// @namespace http://www.axentric.com/aside/fat/
// @version   1.0-RC1
// @author    Adam Michela
var Fat = {
	make_hex : function (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;
	},
	fade_all : function () {
		var tags = ["i"];
		for (var i = 0; i < tags.length; i++) {
			var elements = document.getElementsByTagName(tags[i]);
			for (var j = 0; j < elements.length; j++) {
				var o = elements[j];
				var r = /fade-?(\w{3,6})?/.exec(o.className);
				if (r) {
					if (!r[1]) r[1] = "";
					if (o.id) Fat.fade_element(o.id, null, null, null, "#" + r[1]);
				}
			}
		}
	},
	fade_element : function (id, fps, duration, from, to) {
		if (!fps) fps = 30;
		if (!duration) duration = 3000;
		if (!from || from == "#") from = this.get_bgcolor(id);
		if (!to || to == "#") to = "#ffffff";

		var frames = Math.round(fps * (duration / 1000));
		var interval = duration / frames;
		var delay = interval;
		var frame = 0;

		if (from.length < 7) from += from.substr(1, 3);
		if (to.length < 7) to += to.substr(1, 3);

		var rf = parseInt(from.substr(1, 2), 16);
		var gf = parseInt(from.substr(3, 2), 16);
		var bf = parseInt(from.substr(5, 2), 16);
		var rt = parseInt(to.substr(1, 2), 16);
		var gt = parseInt(to.substr(3, 2), 16);
		var bt = parseInt(to.substr(5, 2), 16);

		var r,g,b,h;
		while (frame < frames) {
			r =
			Math.floor(rf * ((frames - frame) / frames) + rt * (frame / frames));
			g =
			Math.floor(gf * ((frames - frame) / frames) + gt * (frame / frames));
			b =
			Math.floor(bf * ((frames - frame) / frames) + bt * (frame / frames));
			h = this.make_hex(r, g, b);

			setTimeout("Fat.set_bgcolor('" + id + "','" + h + "')", delay);

			frame++;
			delay = interval * frame;
		}
		setTimeout("Fat.set_bgcolor('" + id + "','" + to + "')", delay);
	},
	set_bgcolor : function (id, c) {
		var o = document.getElementById(id);
		o.style.backgroundColor = c;
	},
	get_bgcolor : function (id) {
		var o = document.getElementById(id);
		while (o) {
			var c;
			if (window.getComputedStyle) c =
																	 window.getComputedStyle(o, null).getPropertyValue("background-color");
			if (o.currentStyle) c = o.currentStyle.backgroundColor;
			if ((c != "" && c != "transparent") || o.tagName == "BODY") {
				break;
			}
			o = o.parentNode;
		}
		if (c == undefined || c == "" || c == "transparent") c = "#FFFFFF";
		var rgb = c.match(/rgb\s*\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*\)/);
		if (rgb) c =
						 this.make_hex(parseInt(rgb[1]), parseInt(rgb[2]), parseInt(rgb[3]));
		if (c.charAt(0) != "#") {
			c = convertCssColorNametoHex(c);
			if (c == undefined) c = "#ffffff";
		}
		return c;
	}
}

// http://radio.javaranch.com/pascarello/2005/05/25/1117043999998.html
function ResetForm(xFormName) {
	var arrElems = document.forms[xFormName].elements;
	document.forms[xFormName].reset();
	for (xi = 0; xi < arrElems.length; xi++) {
		if (arrElems[xi].type.toLowerCase() == "text" ||
				arrElems[xi].type.toLowerCase() == "password" ||
				arrElems[xi].type.toLowerCase() == "textarea") {
			arrElems[xi].value = "";
		} else if (arrElems[xi].type.toLowerCase() == "radio" ||
							 arrElems[xi].type.toLowerCase() == "checkbox") {
			arrElems[xi].selected = false;
		} else if (arrElems[xi].type.toLowerCase().indexOf("select") != -1) {
			arrElems[xi].selectedIndex = 0;
		}
	}
}

function convertCssColorNametoHex(color_string) {
	var simple_colors = {
		white: 'ffffff',
		yellow: 'ffff00',
		orange: 'ffA500',
		red: 'ff0000',
		fuchsia: 'ff00ff',
		silver: 'c0c0c0',
		gray: '808080',
		olive: '808000',
		purple: '800080',
		maroon: '800000',
		aqua: '00ffff',
		lime: '00ff00',
		teal: '008080',
		green: '008000',
		blue: '0000ff',
		navy: '000080',
		black: '000000'
	};
	return simple_colors[color_string.toLowerCase()];
}