/*
 * QTObject embed
 * http://blog.deconcept.com/2005/01/26/web-standards-compliant-javascript-quicktime-detect-and-embed/
 *
 * by Geoff Stearns (geoff@deconcept.com, http://www.deconcept.com/)
 *
 * v1.0.2 - 02-16-2005
 *
 * Embeds a quicktime movie to the page, includes plugin detection
 *
 * Usage:
 *
 *	myQTObject = new QTObject("path/to/mov.mov", "movid", "width", "height");
 *	myQTObject.altTxt = "Upgrade your Quicktime Player!";    // optional
 
 *  myQTObject.addParam("controller", "false");              // optional
 *	myQTObject.write();
 *
 */

QTObject = function(mov, id, w, h) 
{
	this.mov = mov;
	this.id = id;
	this.width = w;
	this.height = h;
	this.redirect = "";
	this.sq = document.location.search.split("?")[1] || "";
	this.altTxt = "This content requires the QuickTime Plugin. <a href='http://www.apple.com/quicktime/download/'>Download QuickTime Player</a>.";
	this.bypassTxt = "<p>Already have QuickTime Player? <a href='?detectqt=false&"+ this.sq +"'>Click here.</a></p>";
	this.params = new Object();
	this.doDetect = getQueryParamValue('detectqt');
}

QTObject.prototype.addParam = function(name, value) 
{
	this.params[name] = value;
}

QTObject.prototype.getParams = function() 
{
    return this.params;
}

QTObject.prototype.getParam = function(name) 
{
    return this.params[name];
}

QTObject.prototype.getParamTags = function() 
{
    var paramTags = "";
    for (var param in this.getParams()) 
    {
        paramTags += '<param name="' + param + '" value="' + this.getParam(param) + '" />';
    }
    if (paramTags == "") 
    {
        paramTags = null;
    }
    return paramTags;
}

QTObject.prototype.getHTML = function() 
{
    var qtHTML = "";
    
	if (navigator.plugins && navigator.plugins.length) 
	{ // not ie
        qtHTML += '<embed type="video/quicktime" src="' + this.mov + '" width="' + this.width + '" height="' + this.height + '" id="' + this.id + '" name="' + this.id + '"';
        for (var param in this.getParams()) {
            qtHTML += ' ' + param + '="' + this.getParam(param) + '"';
        }
        qtHTML += '></embed>';
    }
    else 
    { // pc ie
        qtHTML += '<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" width="' + this.width + '" height="' + this.height + '" id="' + this.id + '">';
        this.addParam("src", this.mov);
        if (this.getParamTags() != null) 
        {
            qtHTML += this.getParamTags();
        }
        qtHTML += '</object>';
    }
    return qtHTML;
}


QTObject.prototype.getVariablePairs = function() 
{
    var variablePairs = new Array();
    for (var name in this.getVariables()) 
    {
        variablePairs.push(name + "=" + escape(this.getVariable(name)));
    }
    if (variablePairs.length > 0) 
    {
        return variablePairs.join("&");
    }
    else 
    {
        return null;
    }
}

QTObject.prototype.write = function(elementId) 
{
	if(isQTInstalled() || this.doDetect=='false') 
	{
		if (elementId) 
		{
			document.getElementById(elementId).innerHTML = this.getHTML();
		} else 
		{
			document.write(this.getHTML());
		}
	} 
	else 
	{
		if (this.redirect != "") 
		{
			document.location.replace(this.redirect);
		} 
		else 
		{
			if (elementId)
			{
				document.getElementById(elementId).innerHTML = this.altTxt +""+ this.bypassTxt;
			} else 
			{
				document.write(this.altTxt +""+ this.bypassTxt);
			}
		}
	}		
}

function isQTInstalled() {
    try
    {
	    var qtInstalled = false;
	    qtObj = false;
	    if (navigator.plugins && navigator.plugins.length) 
	    {
		    for (var i=0; i < navigator.plugins.length; i++ ) {
             var plugin = navigator.plugins[i];
             if (plugin.name.indexOf("QuickTime") > -1) {
			    qtInstalled = true;
             }
          }
	    }
	    else 
	    {
		    execScript('on error resume next: qtObj = IsObject(CreateObject("QuickTimeCheckObject.QuickTimeCheck.1"))','VBScript');
		    qtInstalled = qtObj;
	    }
	}
	catch(e)
	{
	    return false;
	}
	return qtInstalled;
}

/* get value of querystring param */
function getQueryParamValue(param) {
	var q = document.location.search;
	var detectIndex = q.indexOf(param);
	var endIndex = (q.indexOf("&", detectIndex) != -1) ? q.indexOf("&", detectIndex) : q.length;
	if(q.length > 1 && detectIndex != -1) {
		return q.substring(q.indexOf("=", detectIndex)+1, endIndex);
	} else {
		return "";
	}
}

//Quicktime Statusbar code

function updateQTstatus(statusId, playerId, progressId) 
{
    if (!isQTInstalled())
    {
        var player = document.getElementById(playerId+'Div');
        var playerController = document.getElementById(playerId+'Controller');

        if (player != null)
        {
            player.innerHTML = "<B>The content require the QuickTime browser plugin to be installed.</B> <br /><br />Please get it from <a href='http://www.apple.com/quicktime/download/' target='_blank'>Download QuickTime Player</a>.";
        }
        if (playerController != null)
        {
            playerController.innerHTML = "";
        }
    }
    
    // if the user do have QuickTime, then log the feedback on how far the file have downloaded
    var player = document.getElementById(playerId);
    var movieSizeTotal;
    try
    {
        var tst = player.GetMovieSize();
    }
    catch(error)
    {

    }
    
    // Checks how much of the QT movie has been loaded, and updated the innerHTML of an element (supplied as an arguement)
    statusToUpdate = document.getElementById(statusId);

    if (tst != null && statusToUpdate != null) 
    {
        origStatus = statusToUpdate.innerHTML;
        if (document.getElementById(playerId)) 
        {
	        //alert(document.getElementById('qtmovie'));
	        movieSizeTotal = player.GetMovieSize();
        }
        else
        {
	        movieSizeTotal = false;
        }	
        if (!isNaN(movieSizeTotal) && movieSizeTotal > 0) 
        {
	        // Get the start time
	        //start = new Date();
	        //startTime=start.getTime();
        } 
        else 
        {
	        setTimeout("updateQTstatus('"+statusId+"', '" + playerId + "', '" + progressId + "')",3000);
	        return;
        }
    }
	
	if (movieSizeTotal) 
	{
		percentLoaded = (player.GetMaxBytesLoaded() / player.GetMovieSize() )*100;
	
		if (!isNaN(percentLoaded)) 
		{   // If we have a percent		
			// How long have we been going?
			//now = new Date();
			//nowTime=now.getTime();
			//elapsed = nowTime - startTime;
			//remaining = Math.round(((elapsed/percentLoaded*100)-elapsed)/1000);
			
			statusToUpdate.innerHTML = ' - '  + Math.round(percentLoaded) + '%';
			//statusToUpdate.innerHTML = origStatus + ' - '  + Math.round(percentLoaded) + '% ('+remaining+' sec)';
			showProgress(progressId, percentLoaded);
			if (percentLoaded < 100) 
			{
				setTimeout("updateQTstatus('"+statusId+"', '" + playerId + "', '" + progressId + "')",3000);
			} else 
			{
				statusToUpdate.innerHTML = "";
				hideProgressBar(progressId);
			}
		}
	}
}

function hideProgressBar(progressId) 
{
	bar = document.getElementById(progressId);
	bar.style.display = 'none';
	
}

function showProgress(progressId,percent) 
{
	bar = document.getElementById(progressId);
	bar.style.display = 'block';
	
	// The progress image
	//var imageWidth = 2000;
	var imageWidth = 430;
	
	// Element width
	var theWidth = bar.offsetWidth;
	
	// Calculate the offset
	//var theOffset = -imageWidth + (theWidth * (percent / 100));
	var theOffset = (theWidth * (percent / 100));
	
	// Set the position of the bar
	//bar.style.backgroundPosition = Math.round(percent) + 'px 0';	
	bar.style.backgroundPosition = theOffset+'px 0';	
	
}

//Player Controller Methods

    function qtPlay(playerId)
    {
        var player = document.getElementById(playerId);
        
        try
        {
            if (player != null)
            {
                player.Play();
            }
        }
        catch(error)
        {
        
        }
    }
    
    function qtStop(playerId)
    {
        var player = document.getElementById(playerId);
     
        try
        {   
            if (player != null)
            {
                player.Rewind();
                player.Stop();
            }
        }
        catch(error)
        {
        
        }
    }

    function qtPause(playerId)
    {
        var player = document.getElementById(playerId);
        
        try
        {   
            if (player != null)
            {
                player.Stop();
            }
        }
        catch(error)
        {
        
        }
    }
    
    function qtForward(playerId)
    {
        var player = document.getElementById(playerId);
        
        try
        {
            if (player != null)
            {
                player.Step(30);
            }
        }
        catch(error)
        {
        
        }
    }
    
    function qtRewind(playerId)
    {
        var player = document.getElementById(playerId);
        
        try
        {
            if (player != null)
            {
                player.Step(-30);
            }
        }
        catch(error)
        {
        
        }
    }
    
    function qtVolumeUp(playerId)
    {
        var player = document.getElementById(playerId);
        
        try
        {
            if (player != null && player.GetVolume() < 1000)
            {
                player.SetVolume(player.GetVolume()+200);
            }
        }
        catch(error)
        {
        
        }
    }
    
    function qtVolumeDown(playerId)
    {
        var player = document.getElementById(playerId);
        
        try
        {
            if (player != null && player.GetVolume() > 0)
            {
                player.SetVolume(player.GetVolume()-200);
            }
        }
        catch(error)
        {
        
        }
    }

    function trim(stringToTrim) 
    {
	    return stringToTrim.replace(/^\s+|\s+$/g,"");
    }
    
    function ltrim(stringToTrim) 
    {
	    return stringToTrim.replace(/^\s+/,"");
    }
    
    function rtrim(stringToTrim) 
    {
	    return stringToTrim.replace(/\s+$/,"");
    }