function quoted(str) {
  return (str != null) ? '"' + str + '"' : '""';
}

function show_calc() {
var w = window;
w.calc_url = w.calc_url + 'Calculator.aspx?ID=' + w.calc_id
document.write('<ifr' + 'ame' +
                     ' name="finance_calc"' +
                     ' width=' + quoted(w.calc_width) +
                     ' height=' + quoted(w.calc_height) +
                     ' src=' + quoted(w.calc_url) +
                     ' frameborder="0"' +                     
                     ' marginwidth="0"' +
                     ' marginheight="0"' +
                     ' vspace="0"' +
                     ' hspace="0"' +
                     ' allowtransparency="true"' +
                     ' scrolling="no">');
      document.write('</ifr' + 'ame>');
      
}

show_calc()