var pause = 0;
var obj_step = false;
var obj_speed = -0.01;
var obj_X = 0;
var obj_winkel = false;

var pause2 = 0;
var obj_step2 = false;
var obj_speed2 = -0.003;
var obj_X2 = 0;
var obj_winkel2 = -200;
 
function positionieren(frac, links, oben){
document.getElementById(frac).style.top = oben +'em';
document.getElementById(frac).style.left = links +'em';
}
 
function positionieren2(frac, links, oben){
document.getElementById(frac).style.top = oben +'em';
document.getElementById(frac).style.left = links +'em';
}
 
function bewegung() {
  positionieren("frac",obj_X,0);
  obj_X += obj_step;
  obj_X = Math.sin(obj_winkel)*8 -1;
  obj_Y = Math.cos(obj_winkel)*16+ 20;
  positionieren("frac", obj_X, obj_Y);
  obj_winkel += obj_speed;
  timer = window.setTimeout("bewegung();", pause);
}

function bewegung2() {
  positionieren("frac2",obj_X2,0);
  obj_X2 += obj_step2;
  obj_X2 = Math.sin(obj_winkel2)*38 + 38;
  obj_Y2 = Math.cos(obj_winkel2)*10 - 5;
  positionieren2("frac2", obj_X2, obj_Y2);
  obj_winkel2 += obj_speed2;
  timer2 = window.setTimeout("bewegung2();", pause);
}