사이트 배경에 날아다니는 별 배경을 만들어보자꾼!!

<script language=JavaScript>
<!--
  cOlOuRs=new Array("abbbff","ffffee","ffff7a","dffffd","ffaaa0","ffddd0")
  S_amount = 30;
  L_amount = 15;
  S_Ypos = new Array();
  S_Ypos = S_Ypos;
  S_Xpos = new Array();
  L_Ypos = new Array();
  L_Xpos = new Array();
  S_speed= new Array();
  L_speed= new Array();
  if (document.all){
    for (i = 0; i < S_amount; i++){
      S_Ypos[i] = Math.round(Math.random()*document.body.offsetHeight);
      S_Xpos[i] = Math.round(Math.random()*document.body.offsetWidth);
    }
    for (i = 0; i < L_amount; i++){
      L_Ypos[i] = Math.round(Math.random()*document.body.offsetHeight);
      L_Xpos[i] = Math.round(Math.random()*document.body.offsetWidth);
    }
    document.write('<div id="Outer" style="position:absolute;top:0px;left:0px">');
    document.write('<div id="Inner" style="position:relative">');
    for (i = 0; i < S_amount; i++){
      document.write('<div id="ieS_star" style="position:absolute;top:'+S_Ypos[i]+';left:'+S_Xpos[i]+';width:1px;height:1px;background:#fffff0;font-size:2px"></div>');
    }
    for (i = 0; i < L_amount; i++){
      document.write('<div id="ieL_star" style="position:absolute;top:'+L_Ypos[i]+';left:'+L_Xpos[i]+';width:2px;height:2px;background:#ffffff;font-size:3px"></div>');
    }
    document.write('</div>');
    document.write('</div>');
    for (i = 0; i < L_amount; i++){
      for (j = 0; j < cOlOuRs.length; j++){
        var NewColour=Math.round(Math.random()*[j])
      }
      document.all.ieS_star[i].style.background=cOlOuRs[NewColour];
      document.all.ieL_star[i].style.background=cOlOuRs[NewColour];
    }
    for (i=0; i < ieS_star.length; i++){S_speed[i]=Math.random()*3+1}
    for (i=0; i < ieL_star.length; i++){L_speed[i]=Math.random()*7+2}

function ES_go(){
  document.all.Outer.style.pixelTop=document.body.scrollTop;
  for (i=0; i < ieS_star.length; i++){
    ieS_star[i].style.pixelLeft-=S_speed[i];
    if (ieS_star[i].style.pixelLeft < -10){ieS_star[i].style.pixelLeft=window.document.body.offsetWidth}
  }
  S_timer=setTimeout('ES_go()',30);
}
function EL_go(){
  for (i=0; i < ieL_star.length; i++){
    ieL_star[i].style.pixelLeft-=L_speed[i];
   if (ieL_star[i].style.pixelLeft  -10){ieL_star[i].style.pixelLeft=window.document.body.offsetWidth}
  }
  L_timer=setTimeout('EL_go()',10);
}
function IeStart(){
  ES_go();
  EL_go();
}

    IeStart();
  }
  else if (document.layers){
    for (i = 0; i < S_amount; i++){
      S_Ypos[i] = Math.round(Math.random()*window.innerHeight);
      S_Xpos[i] = Math.round(Math.random()*window.innerWidth);
      document.write("<LAYER NAME='S_star"+i+"' LEFT=0 TOP=0 BGCOLOR='#FFFFF0' CLIP='0,0,1,1'></LAYER>");
      document.layers["S_star"+i].top = S_Ypos[i];
      document.layers["S_star"+i].left = S_Xpos[i];
    }
    for (i = 0; i < L_amount; i++){
      L_Ypos[i] = Math.round(Math.random()*window.innerHeight);
      L_Xpos[i] = Math.round(Math.random()*window.innerWidth);
      document.write("<LAYER NAME='L_star"+i+"' LEFT=0 TOP=0 BGCOLOR='#FFFFF0' CLIP='0,0,2,2'></LAYER>");
      document.layers["L_star"+i].top = L_Ypos[i];
      document.layers["L_star"+i].left = L_Xpos[i];
      for (j = 0; j < cOlOuRs.length; j++){
        var NewColour=Math.round(Math.random()*[j]);
      }
      document.layers['S_star'+i].bgColor=cOlOuRs[NewColour];
      document.layers['L_star'+i].bgColor=cOlOuRs[NewColour];
    }
    for (i=0; i < S_amount; i++){S_speed[i]=Math.random()*3+1}
    for (i=0; i < L_amount; i++){L_speed[i]=Math.random()*7+2}

function NS_go(){
  for (i=0; i < S_amount; i++){
    var temp="S_star"+i;//50
    document.layers[temp].top=S_Ypos[i]+window.pageYOffset;
    document.layers['S_star'+i].left-=S_speed[i];
   if (document.layers['S_star'+i].left < -10){document.layers['S_star'+i].left=window.innerWidth}
  }
  S_timer=setTimeout('NS_go()',30);
}
function NL_go(){
  for (i=0; i < L_amount; i++){
    var temp="L_star"+i
    document.layers[temp].top=L_Ypos[i]+window.pageYOffset;
    document.layers['L_star'+i].left-=L_speed[i];
    if (document.layers['L_star'+i].left < -10){document.layers['L_star'+i].left=window.innerWidth}
  }
  L_timer=setTimeout('NL_go()',10);
}
function NsStart(){
  NS_go();
  NL_go();
}

    NsStart();
  }
  window.onresize = new Function("window.location.reload()");
//-->
</script>