text: function compute()
  {
      var principal = document.getElementById("principal").value;
      var rate = document.getElementById("rate").value;
      var years = document.getElementById("years").value;
      var interest = principal * years * (rate / 100);
      var year = new Date().getFullYear()+parseInt(years);
      var amount = parseFloat(principal) + parseFloat(interest);
      if (principal>0){
          		 document.getElementById("result").innerHTML="If you deposit \<mark\>"+principal+",\</mark>\<br\>at an interest rate of \<mark>"+rate+"%\</mark>\<br\>You will receive an amount of \<mark>"+amount+",\</mark>\<br\>in the year \<mark>"+year+"\</mark>\<br\>";
      }
      else{
          window.alert("Enter a positive number");
          document.getElementById("principal").focus();
      }
  }
      function updateRate(){
          var rateval = document.getElementById("rate").value;
          document.getElementById("rate_val").innerText=rateval;
      }