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 a = document.getElementsByTagName("*");
 		 for (var i = 0; i < a.length; i++) {
 			  var o = a[i];
 			  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,"#"+r[1]);
			   }
		  }
	 },
	 fade_element : function (id, fps, duration, from, to) {
  		if (!fps) fps = 30;
  		if (!duration) duration = 3000;
  		if (!from || from=="#") from = "#FFFF33";
  		if (!to) to = this.get_bgcolor(id);

  		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]));
  		return c;
	 }
}

// Created by: Simon Willison
// http://simon.incutio.com/archive/2004/05/26/addLoadEvent
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(function() {
  Fat.fade_all();
});