var imgarr=new Array(10);
var urlarr=new Array(10);
var imgcolln= new Array(10);
var curslide=0;
var im=0;
function preLoad() {
 //document.write("<a href='javascript:showPage()'>");
 document.write("<img name=imgs  src='" +imgarr[0] + "' border=0>");
 //document.write("</a>");		
 var len=imgarr.length;	       
 for(j=0;j<len; j++) {
   imgcolln[j]=new Image();
   var astr=imgarr[j];    
   imgcolln[j].src=astr;
 }
}

// to generate image link code that links the image to a webpage 
function registerImageUrl(imgname,urlname) {
 if(im<9) {
   imgarr[im]=imgname;
   urlarr[im]=urlname;
   im++;
  }
  else {
    alert("warning array is already full");
 }	
}

function startAnimation() {
 document.images["imgs"].src=imgcolln[curslide].src;
 curslide=curslide+1;
 if(curslide==im)
   curslide=0;
 setTimeout("startAnimation()",20000);
}

function showPage() {
 curslide=curslide-1;
 if(curslide==-1)
   curslide=im-1;	
 location.href=urlarr[curslide];
}