JavaScript Switch

<script language="JavaScript1.2">
function jsPrompt() {
   var unicorn = prompt("How many feet does a unicorn have?","")
   switch(unicorn) {
      case '1':   alert("No, one horn, four feet"); break
      case '4':   alert("correct, four feet, one horn"); break
      case '5':   alert("No, four feet, one horn, the horn isn't a foot"); break
      default:    alert("No, one horn, four feet");         
   }
}
// -->
</script>
<a href="javascript:jsPrompt()">A Question for You!</a>