// JavaScript Document

//	placeStars( 0, 300, 200 );
	
var imgs = document.getElementsByTagName( 'img' );
var timer1 = null;

function placeStars( alpha, rx, ry ) {
	if( timer1 ) clearTimeout( timer1 );
	var x0 = screen.width/2;
	var y0 = screen.height/3;
	
	for( k=0; k<imgs.length; k++ ) {
		x = x0 + rx*Math.sin( deg2rad( 2*(alpha + k*parseFloat(360.0/imgs.length)) ) );
		y = y0 + ry*Math.cos( deg2rad( 1*(alpha + k*parseFloat(360.0/imgs.length)) ) );
		imgs[k].style.position = 'absolute';
		imgs[k].style.left = x + 'px';
		imgs[k].style.top = y + 'px';
	}
	imgs[0].focus();
	
	alpha++;
	timer1 = setTimeout( 'placeStars('+alpha+','+rx+','+ry+' )', 10 );
}

function deg2rad( deg ) { 
	var pi = 3.1415926535;
	return parseFloat( deg*pi/180 );
}