function gira(){
for(var i=0; i<3; ++i)
{
	document.sats[i].style.left = (document.x0[i] * Math.cos(document.theta) + document.y0[i] * Math.sin(document.theta)-23).toString() + "px";
	document.sats[i].style.top = (-document.x0[i] * Math.sin(document.theta) + document.y0[i] * Math.cos(document.theta)-23).toString() + "px";
}
document.theta += Math.PI/90;
if(document.theta >= Math.PI*2) document.theta -= Math.PI*2;
}
function vai()
{
if(document.running) return;
document.theta = 0;
document.sats = new Array(document.images.sat1,document.images.sat2,document.images.sat3);
document.x0 = new Array(parseInt(document.sats[0].style.left)+23,parseInt(document.sats[1].style.left)+23,parseInt(document.sats[2].style.left)+23);
document.y0 = new Array(parseInt(document.sats[0].style.top)+23,parseInt(document.sats[1].style.top)+23,parseInt(document.sats[2].style.top)+23);
document.running = true;
setInterval('gira()',40);
}