//AJAX Section

/** XHConn - Simple XMLHTTP Interface - bfults@gmail.com - 2005-04-08        **
 ** Code licensed under Creative Commons Attribution-ShareAlike License      **
 ** http://creativecommons.org/licenses/by-sa/2.0/                           **/
//Modified by K-Qha: Included status update...
function XHConn()
{
  var xmlhttp, bComplete = false;
  try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
  catch (e) { try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
  catch (e) { try { xmlhttp = new XMLHttpRequest(); }
  catch (e) { xmlhttp = false; }}}
  if (!xmlhttp) return null;
  this.connect = function(sURL, sMethod, sVars, fnDone)
  {
    if (!xmlhttp) return false;
    bComplete = false;
    sMethod = sMethod.toUpperCase();
    try {
      if (sMethod == "GET")
      {
		xmlhttp.open(sMethod, sURL, true);	//edited by K-Qha, ignore sVars
        sVars = "";
      }
      else
      {
        xmlhttp.open(sMethod, sURL, true);
        xmlhttp.setRequestHeader("Method", "POST "+sURL+" HTTP/1.1");
        xmlhttp.setRequestHeader("Content-Type",
          "application/x-www-form-urlencoded");
      }
      xmlhttp.onreadystatechange = function(){
        if (xmlhttp.readyState == 4 && !bComplete) {
          bComplete = true;
          fnDone(xmlhttp);
        } 
      }
      xmlhttp.send(sVars);
    }
    catch(z) { return false; }
    return true;
  };
  return this;
}

function _ajxLoad(areaID, sz) {
  switch (sz) {
    case 0:
      document.getElementById(areaID).innerHTML = "<img src='webmods/ajax/loading_small.gif' alt='AJAX Loading' />" ;
      break ;
    case 1:
      document.getElementById(areaID).innerHTML = "<img src='webmods/ajax/loading_big.gif' alt='AJAX Loading' style='margin:10px;' />" ;
      break ;
    default:
      document.getElementById(areaID).innerHTML = "<p align='center'>Loading...</p>" ;
      break ;
  }
}

function processResult(areaID,res) {
  var arr = new Array() ;
  var ajxPostProcess = false ;
  var content = "" ;
  var a ;
  arr = res.responseText.split(String.fromCharCode(13)) ;
  if ((arr.length==0) || (isNaN(arr[0])) || (arr[0]<0)) {
	//document.getElementById(areaID).innerHTML = "AJAX Error" ;
	document.write(arr.toString()) ;
  } else {
	for (a=1;a<=arr[0];a++) content += arr[a] ;
	eval(content) ;
	content = "" ;
	for (a=Number(arr[0])+1;a<arr.length;a++) content += arr[a] ;
	document.getElementById(areaID).innerHTML = content ;
	if (ajxPostProcess) eval(ajxPostProcess) ;
	//document.write(arr.toString()) ;
  }
}

function getAJAX(url, sz) {
  getAJAX_CustomCX("ajax_main",url,sz) ;
}

function getAJAX_Custom(areaID,url,sz) {
  var ajaxConn = new XHConn() ;
  
  _ajxLoad(areaID,sz) ;
  ajxScrollIntoView(areaID) ;
  ajaxConn.connect(url,"GET","",fnWhenDone) ;
  
  function fnWhenDone(res) {
	document.getElementById(areaID).innerHTML = res.responseText ;
  }
}

function getAJAX_CustomCX(areaID,url,sz) {
  var ajaxConn = new XHConn() ;
  
  _ajxLoad(areaID,sz) ;
  ajxScrollIntoView(areaID) ;
  ajaxConn.connect(url,"GET","",fnWhenDone) ;
  
  function fnWhenDone(res) {
	processResult(areaID,res) ;
  }
}

function postAJAX(frmID,url,sz) {
  postAJAX_CustomCX("ajax_main",frmID,url,sz) ;
}

function postAJAX_Custom(areaID,frmID,url,sz) {
  var param = "" ;
  var ajaxConn = new XHConn() ;
  var elem = document.getElementById(frmID).elements ;
  
  _ajxLoad(areaID,sz) ;
  for(var i = 0; i < elem.length; i++) {
    if (elem[i].type!="submit") {
      if (param == "")
        param = elem[i].name + "=" + encodeURIComponent(elem[i].value)
      else
        param += "&" + elem[i].name + "=" + encodeURIComponent(elem[i].value) ;
    }
  }
  ajxScrollIntoView(areaID) ;
  ajaxConn.connect(url,"POST",param,fnWhenDone) ;
  
  function fnWhenDone(res) {
    document.getElementById(areaID).innerHTML = res.responseText ;
  }
}

function postAJAX_CustomCX(areaID,frmID,url,sz) {
  var param = "" ;
  var ajaxConn = new XHConn() ;
  var elem = document.getElementById(frmID).elements ;
  
  _ajxLoad(areaID,sz) ;
  for(var i = 0; i < elem.length; i++) {
    if (elem[i].type!="submit") {
      if (param == "")
        param = elem[i].name + "=" + encodeURIComponent(elem[i].value)
      else
        param += "&" + elem[i].name + "=" + encodeURIComponent(elem[i].value) ;
    }
  }
  ajxScrollIntoView(areaID) ;
  ajaxConn.connect(url,"POST",param,fnWhenDone) ;
  
  function fnWhenDone(res) {
    processResult(areaID,res) ;
  }
}

//Other...
function ajxScrollIntoView(areaID) {
  var psy = ajxFindPos(document.getElementById(areaID)) ;
  if (document.all) {
	var iebody = (document.compatMode && document.compatMode != "BackCompat")? document.documentElement : document.body ;
	var dsoctop = iebody.scrollTop ;
	var wheight = iebody.clientHeight ;
  } else {
	var dsoctop = window.pageYOffset ;
	var wheight = window.innerHeight ;
  }
  
  if (psy>=((dsoctop+wheight)-100)) window.scroll(0,psy) ;
}

function ajxFindPos(obj) {
  //http://clifgriffin.com/2008/10/14/using-javascript-to-scroll-to-a-specific-elementobject/
  var curtop = 0;
  if (obj.offsetParent) {
	do {
	  curtop += obj.offsetTop;
	} while (obj = obj.offsetParent);
	return [curtop];
  }
}