var a = 0;
var b = 70;
function hin1(){
         if(a <= 70){
                 document.getElementById(a).src = "slices/eck1.gif";
                 a++;
                 window.setTimeout("hin1()",200);
         }else{
                 a = 70;
                 window.setTimeout("hin2()",2000);
         }
}
function hin2(){
         if(a >= 0){
                 document.getElementById(a).src = "slices/eck.gif";
                 a--;
                 window.setTimeout("hin2()",200);
         }else{
                 a = 0;
                 window.setTimeout("hin1()",2000);
         }

}