javascript longtoip

function(value) {
var a = "";
var b = "";
var c = "";
var d = "";

for (var i = 3; i >= 0; i--) {
var n = parseInt(value/ Math.pow(256, i));
value -= parseInt(value/ Math.pow(256, i))* Math.pow(256, i);

switch (i) {
case 3 :
a = n;
break;
case 2 :
b = n;
break;
case 1 :
c = n;
break;
case 0 :
d = n;
break;
}
}

return [a, b, c, d];

}