// print stars like iTunes
var ratings = {
     0: "\u2606\u2606\u2606\u2606\u2606",
   0.5: "\u00BD\u2606\u2606\u2606\u2606",
     1: "\u2605\u2606\u2606\u2606\u2606",
   1.5: "\u2605\u00BD\u2606\u2606\u2606",
     2: "\u2605\u2605\u2606\u2606\u2606",
   2.5: "\u2605\u2605\u00BD\u2606\u2606",
     3: "\u2605\u2605\u2605\u2606\u2606",
   3.5: "\u2605\u2605\u2605\u00BD\u2606",
     4: "\u2605\u2605\u2605\u2605\u2606",
   4.5: "\u2605\u2605\u2605\u2605\u00BD",
     5: "\u2605\u2605\u2605\u2605\u2605"
};

alert(ratings[0]);
alert(ratings[0.5]);
alert(ratings[1]);
alert(ratings[1.5]);
alert(ratings[2]);
alert(ratings[2.5]);
alert(ratings[3]);
alert(ratings[3.5]);
alert(ratings[4]);
alert(ratings[4.5]);
alert(ratings[5]);