anchor.diff:      var s16=$['textarea16'];
       canvasClear();
       if (select.options[select.selectedIndex].value == "2") {    //将2进制转换成8进制
  -      s10.value = cal_to_10(2,s).toString();
  -
  -       cal_10_to_draw(8,s10.value);
  +      var ss = cal_to_10(2,s).toString();
  +      cal_to_10_draw(2,s.value);
  +      cal_10_to_draw(8,ss);
       }
       else if (select.options[select.selectedIndex].value == "8") {
         //null
       }
       else if (select.options[select.selectedIndex].value == "10") {
  -
  +      cal_10_to_draw(8,s.value);
       }
       else if (select.options[select.selectedIndex].value == "16") {
  +      var ss = cal_to_10(16,s).toString();
  +      cal_to_10_draw(16,s.value);
  +      cal_10_to_draw(8,ss);
       }
       else {
         window.alert('Please choose the right number!!');
  
positive.code:     var s16=$['textarea16'];
      canvasClear();
      if (select.options[select.selectedIndex].value == "2") {    //将2进制转换成8进制
        s10.value = cal_to_10(2,s).toString();
  
        cal_10_to_draw(8,s10.value);
      }
      else if (select.options[select.selectedIndex].value == "8") {
        //null
      }
      else if (select.options[select.selectedIndex].value == "10") {
  
      }
      else if (select.options[select.selectedIndex].value == "16") {
      }
      else {
        window.alert('Please choose the right number!!');
  
negative.code:   }
  
    void present16(Event e, var detail, Node target) {
      select = $['select'];
      var s=$['text'];
      var s2=$['textarea2'];
      var s8 =$['textarea8'];
      var s10 = $['textarea10'];
      var s16=$['textarea16'];
      canvasClear();
      if (select.options[select.selectedIndex].value == "2") {    //将2进制转换成8进制
        var ss = cal_to_10(2,s).toString();
        cal_to_10_draw(2,s);
        cal_10_to_draw(16,ss);
      }
      else if (select.options[select.selectedIndex].value == "8") {
        var ss = cal_to_10(8,s).toString();
        cal_to_10_draw(8,s.value);
        cal_10_to_draw(16,ss);
      }
      else if (select.options[select.selectedIndex].value == "10") {
        cal_10_to_draw(16,s.value);
      }
      else if (select.options[select.selectedIndex].value == "16") {
      }
      else {
        window.alert('Please choose the right number!!');
      }
    }
  
    int cal_to_10_draw(int jz, var input) {    //将其他进制转换为10进制的图画画出来
  