// *****   -----------   *****
// *****     ajax.js     *****
// *****   -----------   *****

/************************************************************************
*
* Title:             ajax()
* Category:          AJAX
* File Name:         ajax.js
* WEB URL:
* Created By:        TAKE
* Created Date:      2006-03-13
* Language:          JavaScript
* Description:       Use AJAX(Asynchronous JavaScript + XML)
*                    technology to download files and execute
*                    callback function asynchronously.
*
* Syntax:            ajax(sCallBack, URI, async)
*
* Parameters:        sCallBack - callback function (no quotes)
*                    URI - any URI where the source exists.
*
* Example:           /example/ajax
*
* Browsers that support Ajax
* --------------------------
*  (Note that this is a general list, and support of Ajax
*  applications will depend on the features the browser supports.)
*
*  Microsoft Internet Explorer version 5.0 and above, and browsers
*  based on it (Mac OS versions not supported)
*  Gecko-based browsers like Mozilla, Mozilla Firefox, SeaMonkey,
*  Epiphany, Galeon and Netscape version 7.1 and above
*  Browsers implementing the KHTML API version 3.2 and above,
*  including Konqueror version 3.2 and above, and Apple Safari
*  version 1.2 and above
*  Opera browsers version 8.0 and above, including Opera Mobile
*  Browser version 8.0 and above
*  (Reference: http://en.wikipedia.org/wiki/Ajax_%28programming%29)
*
*  (Mac OS X 10.3 is required for the Apple Safari 1.2)
*
***********************************************************************/


var AJAX_bPageLoaded = false;
var AJAX_aCallBack = Array();
var AJAX_aRtnText = Array();


// ---------------------------------------------------------
// function (ajax)
// - your JavaScript program calls this function
// ---------------------------------------------------------
function ajax(sCallBack, sUri, bAsync, sParam) {

   var oAjax = createHttpRequest();
   var sBrowser = getBrowser();
   
   if (arguments[2] == null) {
      bAsync = true;
   }

   if (!sParam) {
      sParam = null;
   }
   
   
   // --- error messages ---
   var sError01 = '';
   sError01 += 'ERROR: This function does not work on your browser\n\n';
   sError01 += 'Please use one of the latest browsers. ';
   sError01 += 'Some PC compatible browsers: ';
   sError01 += 'IE5+, Netscape 7.1+, Firefox, etc. ';
   sError01 += 'MAC users are safe with Netscape or Firefox. ';
   sError01 += 'These are all free downloads!';
   
   
   // --- unknown browser ---
   if (!oAjax) {
      alert(sError01);
      return false;
   }
   
   
   // --- callback function -------------------------------
   // "oAjax.onload" is safer for opera, mozilla, konqueror
   // "oAjax.onload" does not work on IE
   // -----------------------------------------------------
   switch (sBrowser) {
   case 'IE':
   
      oAjax.onreadystatechange = function(){
      
         if (oAjax.readyState == 4 && oAjax.status == 200) {
         
            // --- session check ---
            var mixRtnValue = '';
            if (oAjax.responseText.indexOf("<?xml") > -1) {
               mixRtnValue = oAjax.responseXML;
            } else {
               mixRtnValue = oAjax.responseText;
               mixRtnValue = removeChar10(mixRtnValue); // see the definition
               if (mixRtnValue.indexOf('Log In Credentials')>-1){
                  mixRtnValue = 'ERROR: Session Timed Out.'
               }
            }
            
            if (sCallBack) {
               if (AJAX_bPageLoaded == true) {
                  sCallBack(mixRtnValue);
               } else {
                  AJAX_aCallBack.push(sCallBack);
                  AJAX_aRtnText.push(mixRtnValue); 
               }
            }
            
         }
      }
      
      break;
      
   default:

      oAjax.onload = function(){
         
         // --- session check ---
         var mixRtnValue = '';
         if (oAjax.responseText.indexOf("<?xml") > -1) {
            var mixRtnValue = oAjax.responseXML;
         } else {
            var mixRtnValue = oAjax.responseText;
            mixRtnValue = removeChar10(mixRtnValue); // see the definition
            if (mixRtnValue.indexOf("Log In Credentials")>-1){
               mixRtnValue = 'ERROR: Session Timed Out.'
            }
         }
         
         if (sCallBack) {
            sCallBack(mixRtnValue);
         }
      }
      break;
   }
   
   oAjax.open('POST', sUri, bAsync);
   oAjax.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); 
   oAjax.send(sParam);
   
}


function ajaxsubmit(sCallBack, sFormId, bAsync) {

   if (arguments[2] == null) {
      bAsync = true;
   }


   if (!sFormId) {
      sFormId = ''; 
   }


   var aVar = Array(); 
   var aVal = Array();


   // --- input elements ---
   var cInput = document.getElementsByTagName('input');
   for (var i=0; i<cInput.length; i++) {

      var oCurItem = cInput[i];

      switch (oCurItem.type) {
      case 'radio':
         if (oCurItem.checked) {
            aVar.push(oCurItem.name);
            aVal.push(oCurItem.value);
         }
         break;
      case 'checkbox':   
         aVar.push(oCurItem.name);
         if (oCurItem.checked) {
            aVal.push(oCurItem.value);
         } else {
            aVal.push('');
         }
         break;
      default: 
         aVar.push(oCurItem.name);
         aVal.push(oCurItem.value);
      }
     
   }


   // --- textarea elements ---
   var cTextArea = document.getElementsByTagName('textarea');
   for (var i=0; i<cTextArea.length; i++) {
      var oCurItem = cTextArea[i];
      aVar.push(oCurItem.name);
      aVal.push(oCurItem.value);
   }


   // --- select elements ---
   var cSelect = document.getElementsByTagName('select');
   for (var i=0; i<cSelect.length; i++) {
      var oCurItem = cSelect[i];
      aVar.push(oCurItem.name);
      aVal.push(oCurItem.value);
   }


   // --- look for the form action ---
   var sUri = ''; 
   if (sFormId == '') {
      oForm = document.getElementsByTagName('form');
      if (oForm) {
         sUri = oForm[0].action;
      } else {
         sUri = location.pathname;
      }
   } else {
      oForm = document.getElementById(sFormId);
      if (oForm) {
         sUri = oForm.action;
      } else {
         sUri = location.pathname;
      }
   }


   // --- build parameter strings ---  
   var sParam = '';
   for (var i in aVar) {
      if (sParam) {
         sParam += '&';
      }
      sParam += aVar[i] + '=' + aVal[i];     
   }


   // --- execute ajax ---
   ajax(sCallBack, sUri, bAsync, sParam);

}


// *********************************************************************
//
//  wait callback until page is completed.
//  because of the IE issue.
//
//  See details about this issue.
//  http://weblogs.asp.net/infinitiesloop/archive/2006/11/02/Dealing-with-IE-_2600_quot_3B00_Operation-Aborted_2600_quot_3B002E00_-Or_2C00_-how-to-Crash-IE.aspx
//
// *********************************************************************
if (getBrowser() == 'IE') {
   window.attachEvent('onload', execQue);
   function execQue(){
   
      AJAX_bPageLoaded = true;

      var sCallBack = '';
      var sRtnText = '';   
      for(var i in AJAX_aCallBack) {
         sCallBack = AJAX_aCallBack[i];
         sRtnText = AJAX_aRtnText[i];
         sCallBack(sRtnText);
      }
   
   }
}


// ---------------------------------------------------------
// function (createHttpRequest)
// - creates HttpRequest depended on the browser
// ---------------------------------------------------------
function createHttpRequest(){

   var oAjax = false;
   
   
   // --- IE ---
   if (window.ActiveXObject) {
      try {
         oAjax = new ActiveXObject("Msxml2.XMLHTTP");
      } catch (e) {
         try {
            oAjax = new ActiveXObject("Microsoft.XMLHTTP");
         } catch (e) {
            null;
         }
      }
   }
   
   
   // --- non IE ---
   if (!oAjax && window.XMLHttpRequest) {
      oAjax = new XMLHttpRequest();
   }
   
   
   return oAjax;
   
}


// ---------------------------------------------------------
// Our system appends character 10 at the end of all
// our web pages as long as the last character is not alreay
// a character 10.
// This function here is just to get around that problem.
// Once this system problem(bug) is fixed, this function
// is no longer needed.
// ---------------------------------------------------------
function removeChar10(sText){

   var sCR = String.fromCharCode(13);
   var sLF = String.fromCharCode(10);
   
   if(sText.substring(sText.length-2)!=(sCR+sLF) &&
   sText.substring(sText.length-1)){
      sText = sText.substring(0, sText.length-1);
   }
   
   return sText;
   
}



// *****   -------------------   *****
// *****     web_app_engl.js     *****
// *****   -------------------   *****

function setRad(obj)
{
  var name = obj.name;
  var beg = name.substr(0, name.indexOf('.'));
//alert(name + '\n' + beg);
//alert(document.getElementsByName("ENGL.REQ.REASON")[2].value);
  if(beg == 'TOEFL')
  {
    document.getElementsByName("ENGL.REQ.REASON")[0].checked = true;
  }
  else if(beg == "IELTS")
  {
    document.getElementsByName("ENGL.REQ.REASON")[1].checked = true;
  }
  else if(beg == "PTE")
  {
    document.getElementsByName("ENGL.REQ.REASON")[2].checked = true;
  }
}
function wipeOut(obj)
{
   switch(obj.name)
   {
     case "TOEFL.PAPER.SCORE":
       document.getElementsByName("TOEFL.COMPUTER.SCORE")[0].value = '';
       document.getElementsByName("TOEFL.INTERNET.SCORE")[0].value = '';
       break;
     case "TOEFL.COMPUTER.SCORE":
       document.getElementsByName("TOEFL.PAPER.SCORE")[0].value = '';
       document.getElementsByName("TOEFL.INTERNET.SCORE")[0].value = '';
       break;
     case "TOEFL.INTERNET.SCORE":
       document.getElementsByName("TOEFL.PAPER.SCORE")[0].value = '';
       document.getElementsByName("TOEFL.COMPUTER.SCORE")[0].value = '';
       break;
   }
}

function adjust(val)
{
  var func = function(){document.getElementById('sect').innerHTML = arguments[0];};
  var url = '/ajax/web.app/engl?' + Math.random();
  url += '&ACTION=' + val;
  ajax(func, url);
}
function iepQuestions(val)
{
  return; //<---------------------
  if (val == 1)
  {
    document.getElementById('postIEPprog').style.display = '';
  }
  else
  {
    document.getElementById('postIEPprog').style.display = 'none';
    var objs = document.getElementsByName("POST.IEP.PROG");
    objs[0].checked = false;
    objs[1].checked = false;
  }
}