var RGBs = [[255,128,128],[128,255,128],[128,128,255]];
function weight(r0,r1,A) {
	var r = new Array();
	for (var n=0; n<r0.length; n++) r[n] = Math.floor((1-A)*r0[n]+A*r1[n]);
	return r;
}
function extravaganza() {
	var ex = window.extravaganzas;
	var o;
	for (var n=0; o=ex[n]; n++) {
		var step = o.step, A = o.A;
		var rgb = weight(o.rgb, RGBs[o.trgb], A);
		A+=step;
		if (A>=1) { A=1; step=-step; if (step>0) o.trgb = (o.trgb+1)%RGBs.length; }
		else if (A<=0) { A=0; step=-step; if (step>0) o.trgb = (o.trgb+1)%RGBs.length; }
		o.style.color = 'rgb('+rgb[0]+','+rgb[1]+','+rgb[2]+')';
		o.A = A; o.step = step;
	}
}
function launch_extravaganza() {
	var ex = window.extravaganzas = new Array();
	var o;
	for (var n=0; o=document.getElementsByTagName('*')[n]; n++) {
		if (o.className.indexOf('extravaganza')>=0) {
			var c = o.style.color;
			if (c && c!='' && !c.indexOf('rgb')) {
				o.rgb = c.match(/(\d+)/g);
			} else o.rgb = [0,0,0];
			o.trgb = 0;
			o.step = 0.2;
			o.A = 0;
			ex.push(o);
		}
	}
	if (ex.length) window.setInterval(extravaganza, 50);
}