function get2(obj, url, destination){
  var getstr = "?";
  getstr += "rand="+Math.random()+"&";
  for(i=0; i<obj.getElementsByTagName("input").length; i++){
      getstr += obj.getElementsByTagName("input").item(i).name + "=" + obj.getElementsByTagName("input").item(i).value + "&";
  }
  for(i=0; i<obj.getElementsByTagName("textarea").length; i++){
      getstr += obj.getElementsByTagName("textarea").item(i).name + "=" + obj.getElementsByTagName("textarea").item(i).value + "&";
  }
  makeRequest(url, getstr,destination);
}

function makeRequest(url, parameters, destination){
  http_request = false;
  if (window.XMLHttpRequest) { // Mozilla, Safari,...
     http_request = new XMLHttpRequest();
     if (http_request.overrideMimeType) {
     	// set type accordingly to anticipated content type
        //http_request.overrideMimeType('text/xml');
        http_request.overrideMimeType('text/html');
     }
  } else if (window.ActiveXObject) { // IE
     try {
        http_request = new ActiveXObject("Msxml2.XMLHTTP");
     } catch (e) {
        try {
           http_request = new ActiveXObject("Microsoft.XMLHTTP");
        } catch (e) {}
     }
  }
  if (!http_request) {
     alert('Cannot create XMLHTTP instance');
     return false;
  }
  http_request.onreadystatechange = function(){alertContents(destination);};;
  http_request.open('GET', url + parameters, true);
  //alert(url + parameters);
  http_request.send(null);
}

function alertContents(destination) {
  if (http_request.readyState == 4) {
     if (http_request.status == 200) {
        result = http_request.responseText;
        document.getElementById(destination).innerHTML = result;
     } else {
        alert('There was a problem with the request.');
     }
  }
}

function resetCalc(){
  document.getElementById('brate').value = 250;
  document.getElementById('num_tk').value = 20;
  document.getElementById('hrs_saved').value = 6;
}