JS fuer Bildwechsel bei OnMouseOver

<script language="JavaScript">
<!--
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}


gillis_0        = new Image();   gillis_0.src        = "gillis_0.jpg";
gillis          = new Image();   gillis.src          = "gillis.jpg";
isolotto_0      = new Image();   isolotto_0.src      = "isolotto_0.jpg";
isolotto        = new Image();   isolotto.src        = "isolotto.jpg";
panglao_0       = new Image();   panglao_0.src       = "panglao_0.jpg";
panglao         = new Image();   panglao.src         = "panglao1.jpg";
james_0         = new Image();   james_0.src         = "james_0.jpg";
james           = new Image();   james.src           = "james.jpg";
kohmak_0        = new Image();   kohmak_0.src        = "kohmak_0.jpg";
kohmak          = new Image();   kohmak.src          = "kohmak1.jpg";
isolotto_0      = new Image();   isolotto_0.src      = "isolotto_0.jpg";
isolotto        = new Image();   isolotto.src        = "isolotto.jpg";
vulcano_0       = new Image();   vulcano_0.src       = "vulcano_0.jpg";
vulcano         = new Image();   vulcano.src         = "vulcano.jpg";
perhentian_b_0  = new Image();   perhentian_b_0.src  = "perhentian_b_0.jpg";
perhentian_b    = new Image();   perhentian_b.src    = "perhentian_b.jpg";
perhentian_k    = new Image();   perhentian_k.src    = "perhentian_k.jpg";
perhentian_k_0  = new Image();   perhentian_k_0.src  = "perhentian_k_0.jpg";
skelligs_0      = new Image();   skelligs_0.src      = "skelligs_0.jpg";
skelligs        = new Image();   skelligs.src        = "skelligs.jpg";
giftun_0        = new Image();   giftun_0.src        = "giftun_0.jpg";
giftun          = new Image();   giftun.src          = "giftun.jpg";






function blend_an(bild)
{
  switch(bild){
     case "gillis":
      document.all.bildgillis.filters.blendTrans.Apply();
      document.all.bildgillis.src = gillis.src;
      document.all.bildgillis.filters.blendTrans.Play();
      break; 
	case "isolotto":
      document.all.bildisolotto.filters.blendTrans.Apply();
      document.all.bildisolotto.src = isolotto.src;
      document.all.bildisolotto.filters.blendTrans.Play();
      break;
    case "panglao":
      document.all.bildpanglao.filters.blendTrans.Apply();
      document.all.bildpanglao.src = panglao.src;
      document.all.bildpanglao.filters.blendTrans.Play();
      break;
    case "james":
      document.all.bildjames.filters.blendTrans.Apply();
      document.all.bildjames.src = james.src;
      document.all.bildjames.filters.blendTrans.Play();
      break;
    case "kohmak":
      document.all.bildkohmak.filters.blendTrans.Apply();
      document.all.bildkohmak.src = kohmak.src;
      document.all.bildkohmak.filters.blendTrans.Play();
      break;
    case "vulcano":
      document.all.bildvulcano.filters.blendTrans.Apply();
      document.all.bildvulcano.src = vulcano.src;
      document.all.bildvulcano.filters.blendTrans.Play();
      break;
    case "perhentian_b":
      document.all.bildperhentian_b.filters.blendTrans.Apply();
      document.all.bildperhentian_b.src = perhentian_b.src;
      document.all.bildperhentian_b.filters.blendTrans.Play();
      break;
	case "perhentian_k":
      document.all.bildperhentian_k.filters.blendTrans.Apply();
      document.all.bildperhentian_k.src = perhentian_k.src;
      document.all.bildperhentian_k.filters.blendTrans.Play();
      break;
    case "skelligs":
      document.all.bildskelligs.filters.blendTrans.Apply();
      document.all.bildskelligs.src = skelligs.src;
      document.all.bildskelligs.filters.blendTrans.Play();
      break;
	case "giftun":
      document.all.bildgiftun.filters.blendTrans.Apply();
      document.all.bildgiftun.src = giftun.src;
      document.all.bildgiftun.filters.blendTrans.Play();
      break;


  }
}
function blend_aus(bild)
{
  switch(bild){
     case "gillis":
      document.all.bildgillis.filters.blendTrans.Apply();
      document.all.bildgillis.src = gillis_0.src;
      document.all.bildgillis.filters.blendTrans.Play();
      break;
	 case "isolotto":
      document.all.bildisolotto.filters.blendTrans.Apply();
      document.all.bildisolotto.src = isolotto_0.src;
      document.all.bildisolotto.filters.blendTrans.Play();
      break;
    case "panglao":
      document.all.bildpanglao.filters.blendTrans.Apply();
      document.all.bildpanglao.src = panglao_0.src;
      document.all.bildpanglao.filters.blendTrans.Play();
      break;
    case "james":
      document.all.bildjames.filters.blendTrans.Apply();
      document.all.bildjames.src = james_0.src;
      document.all.bildjames.filters.blendTrans.Play();
      break;
    case "kohmak":
      document.all.bildkohmak.filters.blendTrans.Apply();
      document.all.bildkohmak.src = kohmak_0.src;
      document.all.bildkohmak.filters.blendTrans.Play();
      break;
    case "skelligs":
      document.all.bildskelligs.filters.blendTrans.Apply();
      document.all.bildskelligs.src = skelligs_0.src;
      document.all.bildskelligs.filters.blendTrans.Play();
      break;
    case "perhentian_b":
      document.all.bildperhentian_b.filters.blendTrans.Apply();
      document.all.bildperhentian_b.src = perhentian_b_0.src;
      document.all.bildperhentian_b.filters.blendTrans.Play();
      break;
    case "perhentian_k":
      document.all.bildperhentian_k.filters.blendTrans.Apply();
      document.all.bildperhentian_k.src = perhentian_k_0.src;
      document.all.bildperhentian_k.filters.blendTrans.Play();
      break;
    case "vulcano":
      document.all.bildvulcano.filters.blendTrans.Apply();
      document.all.bildvulcano.src = vulcano_0.src;
      document.all.bildvulcano.filters.blendTrans.Play();
      break;
	case "giftun":
      document.all.bildgiftun.filters.blendTrans.Apply();
      document.all.bildgiftun.src = giftun_0.src;
      document.all.bildgiftun.filters.blendTrans.Play();
      break;
  }
}
function text_aus()
{
  parent.frames.bottomFrame.location.href = "archipel2.html";
 }


//-->
</script>