// define global var as handle to API object
var bvSCORM_API = null;
var startDate;
// bvSCORM_getAPI, which calls findAPI as needed
function bvSCORM_getAPI(){

  var myAPI = null;
  var tries = 0, triesMax = 10;  
  while (tries < triesMax && myAPI == null){
    window.status = 'Looking for API object ' + tries + '/' + triesMax;
    myAPI = findAPI(window);
    if (myAPI == null && typeof(window.parent) != 'undefined') myAPI = findAPI(window.parent)
    if (myAPI == null && typeof(window.top) != 'undefined') myAPI = findAPI(window.top);
    if (myAPI == null && typeof(window.opener) != 'undefined') if (window.opener != null && !window.opener.closed) myAPI = findAPI(window.opener);      
    if (myAPI == null && typeof(window.opener) != 'undefined'){
	    if (myAPI == null && typeof(window.opener.top) != 'undefined'){
		if (window.opener.top != null && !window.opener.top.closed){
			myAPI = findAPI(window.opener.top);
		}
		
		if (myAPI == null && window.opener.top.opener != null && !window.opener.top.opener.closed){
			myAPI = findAPI(window.opener.top.opener);			
			
			if (myAPI == null && window.opener.top.opener.top != null && !window.opener.top.opener.top.closed){
				myAPI = findAPI(window.opener.top.opener.top);
			}			
		}	
	    }
    }
    tries++;
  }
  
  if (myAPI == null){

    window.status = 'API not found';
    //alert('JavaScript Warning: API object not found in window or opener. (' + tries + ')');
  }
  else{

    bvSCORM_API = myAPI;
    window.status = 'API found';
  }
}

// returns LMS API object (or null if not found)
function findAPI(win){

  // look in this window
  if (typeof(win) != 'undefined' ? typeof(win.API) != 'undefined' : false){
    if (win.API != null )  return win.API;
  }
  // look in this window's frameset kin (except opener)
  if (win.frames.length > 0)  for (var i = 0 ; i < win.frames.length ; i++);{

    if (typeof(win.frames[i]) != 'undefined' ? typeof(win.frames[i].API) != 'undefined' : false){

       if (win.frames[i].API != null)  return win.frames[i].API;
    }
  }
  return null;
}



function BVScorm_adlOnload(){
//alert("Load")
	
  if (bvSCORM_API != null){
  
    var res = bvSCORM_API.LMSInitialize("");
    BVScorm_incomplete();
    startTimer()
    //return res;
  }
}

function startTimer()
{
   startDate = new Date().getTime();
}


function computeTime()
{
   if ( startDate != 0 )
   {
      var currentDate = new Date().getTime();
      var elapsedSeconds = Math.round( (currentDate - startDate) / 1000 );
      var formattedTime = convertTotalSeconds( elapsedSeconds );
   }
   else
   {
      formattedTime = "00:00:00";
   }
   
   return (formattedTime);
}

function convertTotalSeconds(ts)
{
      var strTime="";

      var Hour = Math.floor(ts/3600);

      var Min   = Math.floor((ts-Hour*3600)/60);

      var Sec   = ts-Hour*3600 - Min*60;


      if(Hour<10) strTime+="0";
      strTime+= Hour + ":";
      if(Min<10) strTime+="0";
      strTime+= Min + ":";
      if(Sec<10) strTime+="0";
      strTime+= Sec;

      return strTime;
}

function BVScorm_adlOnunload(){
//alert("unload")

  if (bvSCORM_API != null){
 
    //alert("finishing");
    
    var res = bvSCORM_API.LMSSetValue("cmi.core.session_time", computeTime());
    BVScorm_commit()
    var res = bvSCORM_API.LMSFinish("");
    //return res;
  }
}

function BVScorm_complete(){
//alert("complete1");
  if(bvSCORM_API != null){
//alert("complete_final");
        
    var res = bvSCORM_API.LMSSetValue("cmi.core.lesson_status", "completed");
        //return res;
  }
}

function BVScorm_incomplete(){
 //alert("incomplete");     
  
    if(bvSCORM_API != null){	
        if(bvSCORM_API.LMSGetValue("cmi.core.lesson_status") == "not attempted")
          var res = bvSCORM_API.LMSSetValue("cmi.core.lesson_status", "incomplete");
        //return res;
    }
}
function BVScorm_commit(){
	var res = bvSCORM_API.LMSCommit("");
	
}
function BVScorm_score(score){
  //alert(score)
  if(bvSCORM_API != null ){
    bvSCORM_API.LMSSetValue("cmi.core.score.raw", score);
        //return res;
  }
}


function BVScorm_getlocation(){

  if(bvSCORM_API != null){
    var res = bvSCORM_API.LMSGetValue("cmi.core.lesson_location");
    return res;
  }
}

function BVScorm_setlocation(lPageNum){
//alert("Lesson_location="+lPageNum);
  if(bvSCORM_API != null){
    var res = bvSCORM_API.LMSSetValue("cmi.core.lesson_location", lPageNum);
        //return res;
  }
}

function BVScorm_setcoredata(args){
	if(bvSCORM_API != null){
		var res = bvSCORM_API.LMSSetValue("cmi.suspend_data", args);
        //return res;
	}
}

function BVScorm_getcoredata(){
	if(bvSCORM_API != null){
        var res = bvSCORM_API.LMSGetValue("cmi.suspend_data");
        return res;
	}
}

// get the API
bvSCORM_getAPI();
function fGoToPageById(PageID){ 
  document.main.setVariable("JumptoPageID", PageID);	
  
}