<script>

jQuery(document).ready(function() {    

var tabell = [5,4,3,8,78,4,54,1,22,54];

var sb = "<table>";

var maxArray = sort_unique(tabell).splice(tabell.length-5,3);

for (var i=0;i<tabell.length;i++){

if (tabell[i] == maxArray[2]) {

//

alert("high high");

}

else if (maxArray.indexOf(tabell[i]) > -1) {

//

alert("among top 3");

}

}

maxArray.push(77);

for (var i=0;i<tabell.length;i++){

 sb = sb + "<tr><td>" + i + ":</td><td>" + tabell[i] + "</td></tr>";

}

sb = sb + "</table>";

document.getElementById('tabularData').innerHTML = sb;

});

function sort_unique(arr) {

   arr = arr.sort(function (a, b) { return a*1 - b*1; });

   var ret = [arr[0]];

   for (var i = 1; i < arr.length; i++) { // start loop at 1 as element 0 can never be a duplicate

       if (arr[i-1] !== arr[i]) {

           ret.push(arr[i]);

       }

   }

   return ret;

}

</script>