var i = 1;
var max = 15; // Anzahl der Bilder gesamt
var anz = 5; // Anzahl der angezeigten Bilder

vorladen = new Array();

vorladen[1] = new Image();
vorladen[1].src = "img/ca_img1.jpg";
vorladen[2] = new Image();
vorladen[2].src = "img/ca_img2.jpg";
vorladen[3] = new Image();
vorladen[3].src = "img/ca_img3.jpg";
vorladen[4] = new Image();
vorladen[4].src = "img/ca_img4.jpg";
vorladen[5] = new Image();
vorladen[5].src = "img/ca_img5.jpg";
vorladen[6] = new Image();
vorladen[6].src = "img/ca_img6.jpg";
vorladen[7] = new Image();
vorladen[7].src = "img/ca_img7.jpg";
vorladen[8] = new Image();
vorladen[8].src = "img/ca_img8.jpg";
vorladen[9] = new Image();
vorladen[9].src = "img/ca_img9.jpg";
vorladen[10] = new Image();
vorladen[10].src = "img/ca_img10.jpg";
vorladen[11] = new Image();
vorladen[11].src = "img/ca_img11.jpg";
vorladen[12] = new Image();
vorladen[12].src = "img/ca_img12.jpg";
vorladen[13] = new Image();
vorladen[13].src = "img/ca_img13.jpg";
vorladen[14] = new Image();
vorladen[14].src = "img/ca_img14.jpg";
vorladen[15] = new Image();
vorladen[15].src = "img/ca_img15.jpg";


function move(z) { 

i = i + z; 
if (i >= 1 && i <= max - anz + 1) { 
document.img1.src = vorladen[i].src; 
document.img2.src = vorladen[i + 1].src; 
document.img3.src = vorladen[i + 2].src; 
document.img4.src = vorladen[i + 3].src; 
document.img5.src = vorladen[i + 4].src; 
} 
if (i <= 1) i = 1; 
if (i > max - anz + 1) i = max - anz + 1; 
} 

function detail(x) { 
bi = i + x; 
ca_produkt.location.href = "ca_produkt" + bi.toString() + ".html"; 
ca_produkt_gr.location.href = "ca_produkt_gr" + bi.toString() + ".html"; 

} 
<!--

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];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}