// <!--

    // Oliver Knill,
    // January 23,  2000
    // January 21,  2001  compatible with NS6

if (document.getElementsByTagName && !document.all)    // to make it run
    document.all = document.getElementsByTagName("*"); // also with NS 6


if (document.layers) {                                 // for netscape
  layerStyleRef  ="layer.";
  layerRef       ="document.layers";
  styleSwitch    ="";
}
else{                                                  // for ie
  layerStyleRef  ="layer.style.";
  layerRef       ="document.all";
  styleSwitch    =".style";
}

function aendere_blick(layerName,left,top){
  eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.top=top');
  eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.left=left');
}

function zeige_bild(layerName){
  eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
}

function verstecke_bild(layerName){
  eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
}

var a1=600;
var b1=140;
var a2=-600;
var b2=340;
var warte1=0;
var warte2=1;

function run1(){
  if (warte1==0) {
    if (a1<-600) {a1=600; warte1=1; warte2=0;
             verstecke_bild("Flug1"); run2(); }
    a1-=2; 
    aendere_blick("Flug1",a1,b1);
    verstecke_bild("Flug2");
    zeige_bild("Flug1");
  setTimeout("run1();",30);
  }
}

function run2(){
  if (warte2==0) {
    if (a2>600) {a2=-600; warte2=1; warte1=0;
              verstecke_bild("Flug2"); run2(); }
    a2+=2; 
    aendere_blick("Flug2",a2,b2);
    verstecke_bild("Flug1");
    zeige_bild("Flug2");
  setTimeout("run2();",30);
  }
}

// -->