Implementing Labels in JavaScript

< script type = "text/javascript" >
   <!--
   myLabelA: var x = 2 + 2;
   var y = 5 * 5;
   var z = 9 / 3;
   var j = 7 - 4;
   document.write("The value of 2+2 is: " + x + "<br>");
   document.write("The value of 7-4 is: " + j + "<br><br>");
   myLabelB: for (i = 0; i < 5; i++) {
       document.write("Ths value of i is: " + i + "<br>");
       if (i == 3) {
           break myLabelB;
       }
   }
   myLabelC: document.write("<br>");
   document.write("The value of 5 x 5 is: " + y + "<br>");
   document.write("The value of 9/3 is: " + z + "<br>");
   -->
   <
/script>