javascript find the second highest Element from array
var secondMax = function (){
var arr = [20, 120, 111, 215, 54, 78]; // use int arrays
var max = Math.max.apply(null, arr); // get the max of the array
arr.splice(arr.indexOf(max), 1); // remove max from the array
return Math.max.apply(null, arr); // get the 2nd max
};