window.onload = init;

function prepareForm(formId,canvasId,file) {
  if (!document.getElementById) return false;
  if (!document.getElementById(formId)) return false;
  document.getElementById(formId).onsubmit = function() {
    var data = "";
    for (var i=0; i<this.elements.length; i++) {
      data+= this.elements[i].name;
      data+= "=";
      data+= escape(this.elements[i].value);
      data+= "&";
    }
    return (!sendData(data,file,canvasId));
  };
}

function sendData2(data,file,canvasId) {
  var request = getHTTPObject();
  if (request) {
    request.onreadystatechange = function() {
      parseResponse2(request,canvasId);
    };
    request.open( "POST", file, true );
    request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
    request.send(data);
    return true;
  } else {
    return false;
  }
}

function parseResponse2(request,canvasId) {
  if (request.readyState == 4) {
    if (request.status == 200) {
      var canvas = document.getElementById(canvasId)
      canvas.innerHTML = request.responseText;
    }
  }
}

function sendData(data,file,canvasId) {
  var request = getHTTPObject();
  if (request) {
    request.onreadystatechange = function() {
      parseResponse(request,canvasId);
    };
    request.open( "POST", file, true );
    request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
    request.setRequestHeader('Conent-Type', 'multipart/form-data');
    request.send(data);
    return true;
  } else {
    return false;
  }
}

function parseResponse(request,canvasId) {
  if (request.readyState == 4) {
    if (request.status == 200) {
      var canvas = document.getElementById(canvasId)
      canvas.innerHTML = request.responseText;
      fadeUpErrors();
      fadeUpFeedback();
      init();
    }
  }
}

function emptyElement(element) {
  while (element.hasChildNodes()) {
    element.removeChild(element.lastChild);
  }
}

function fadeUp(element,red,green,blue) {
  if (element.fade) { clearTimeout(element.fade); }
  if (red == 255 && green == 255 && blue == 255) {
    element.style.backgroundColor = "transparent";
    return;
  }
  var newred = red + Math.ceil((255 - red)/10);
  var newgreen = green + Math.ceil((255 - green)/10);
  var newblue = blue + Math.ceil((255 - blue)/10);
  element.style.backgroundColor = "rgb("+newred+","+newgreen+","+newblue+")";
  element.fade = setTimeout(function() { fadeUp(element,newred,newgreen,newblue); },80);
}

function fadeUpErrors() {
  var errors = getElementsByClassName("error");
  for (var i=0 ; i<errors.length; i++) {
    fadeUp(errors[i],204,51,102);
  }
}

function fadeUpFeedback() {
  var feedback = getElementsByClassName("feedback");
  for (var i=0 ; i<feedback.length; i++) {
    fadeUp(feedback[i],249,222,169);
  }
}

function getElementsByClassName(name) {
  var results = new Array();
  var elems = document.getElementsByTagName("*");
  for (var i=0; i<elems.length; i++) {
    if (elems[i].className.indexOf(name) != -1) {
      results[results.length] = elems[i];
    }
  }
  return results;
}

function getHTTPObject() {
  var xhr = false;
  if (window.ActiveXObject) {
    try {
      xhr = new ActiveXObject("Msxml2.XMLHTTP");
    } catch(e) {
      try {
        xhr = new ActiveXObject("Microsoft.XMLHTTP");
      } catch(e) {
        xhr = false;
      }
    }
  } else if (window.XMLHttpRequest) {
    try {
      xhr = new XMLHttpRequest();
    } catch(e) {
      xhr = false;
    }
  }
  return xhr;
}


var xmlHttpAA;

function updateStatusAA()
{    
    xmlHttpAA=GetXmlHttpObjectAA();
    if (xmlHttpAA==null)
    {
        alert ("Your browser does not support AJAX!");
        return;
    } 
    

    var status = document.getElementById("statusupdatebox").value;    
    
    var url="/AJAX/statusUpdate.asp";
    url=url+"?q="+status;
    url=url+"&sid="+Math.random();
    xmlHttpAA.onreadystatechange=stateChangedAA;
    xmlHttpAA.open("GET",url,true);
    xmlHttpAA.send(null);
} 

function stateChangedAA() 
{ 
    if (xmlHttpAA.readyState==4)
    { 
        var returnString;
        returnString = xmlHttpAA.responseText;
                
        var NS4 = (document.layers) ? 1 : 0;
        var IE4 = (document.all) ? 1 : 0;                   
            
        document.getElementById("statusInfo").innerHTML = returnString;        
        
    }
}


function GetXmlHttpObjectAA()
{
    var xmlHttpAA=null;
    try
      {
      // Firefox, Opera 8.0+, Safari
      xmlHttpAA=new XMLHttpRequest();
      }
    catch (e)
      {
      // Internet Explorer
      try
        {
        xmlHttpAA=new ActiveXObject("Msxml2.XMLHTTP");
        }
      catch (e)
        {
        xmlHttpAA=new ActiveXObject("Microsoft.XMLHTTP");
        }
      }
    return xmlHttpAA;
}