text: function compute()
  {
      var p = document.getElementById("principal")
      var principal = document.getElementById("principal").value;
      ["principal"].value ;
      if (principal <= 0) {
          alert("Enter a positive Number");
          p.focus();
      }
      else
      {
          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)-1;
          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>"+interest+"</mark>,\<br\>in the year <mark>"+year+"</mark>\<br\><br\>"
      }
  }
  function updateRate() 
  {
      var rateval = document.getElementById("rate").value;
      document.getElementById("rate_val").innerText=rateval+"%";
  }
  
          
  