// to protect variables from resetting if included more than once
if (typeof renderTwitters != 'function') (function () {
    /** Private variables */
    var browser = (function() {
    	var b = navigator.userAgent.toLowerCase();

    	// Figure out what browser is being used
    	return {
    		safari: /webkit/.test(b),
    		opera: /opera/.test(b),
    		msie: /msie/.test(b) && !(/opera/).test(b),
    		mozilla: /mozilla/.test(b) && !(/(compatible|webkit)/).test(b)
    	};
    })();

    var guid = 0;
    var readyList = [];
    var isReady = false;
    
    /** Global functions */
    
    // to create a public function within our private scope, we attach the 
    // the function to the window object
    window.renderTwitters = function (obj, options) {
        // private shortcuts
        function node(e) {
            return document.createElement(e);
        }
        
        function text(t) {
            return document.createTextNode(t);
        }

        var target = document.getElementById(options.twitterTarget);
        var data = null;
        var ul = node('ul'), li, statusSpan, timeSpan, i, max = obj.length > options.count ? options.count : obj.length;
        
        for (i = 0; i < max && obj[i]; i++) {
            data = getTwitterData(obj[i]);
                        
            if (options.ignoreReplies && obj[i].text.substr(0, 1) == '@') {
                max++;
                continue; // skip
            }
            
            li = node('li');
            
            if (options.template) {
                li.innerHTML = options.template.replace(/%([a-z_\-\.]*)%/ig, function (m, l) {
                    var r = data[l] + "" || "";
                    if (l == 'text' && options.enableLinks) r = linkify(r);
                    return r;
                });
            } else {
                statusSpan = node('span');
                statusSpan.className = 'twitterStatus';
                timeSpan = node('span');
                timeSpan.className = 'twitterTime';
                statusSpan.innerHTML = obj[i].text; // forces the entities to be converted correctly

                if (options.enableLinks == true) {
                    statusSpan.innerHTML = linkify(statusSpan.innerHTML);
                }

                timeSpan.innerHTML = relative_time(obj[i].created_at);

                if (options.prefix) {
                    var s = node('span');
                    s.className = 'twitterPrefix';
                    s.innerHTML = options.prefix.replace(/%(.*?)%/g, function (m, l) {
                        return obj[i].user[l];
                    });
                    li.appendChild(s);
                    li.appendChild(text(' ')); // spacer :-(
                }

                li.appendChild(statusSpan);
                li.appendChild(text(' '));
                li.appendChild(timeSpan);
            }
            
            ul.appendChild(li);
        }

        if (options.clearContents) {
            while (target.firstChild) {
                target.removeChild(target.firstChild);
            }
        }

        target.appendChild(ul);
    };
    
    window.getTwitters = function (target, id, count, options) {
        guid++;
        

        if (typeof id == 'object') {
            options = id;
            id = options.id;
            count = options.count;
        } 

        // defaulting options
        if (!count) count = 1;
        
        if (options) {
            options.count = count;
        } else {
            options = {};
        }
        
        if (!options.timeout && typeof options.onTimeout == 'function') {
            options.timeout = 10;
        }
        
        if (typeof options.clearContents == 'undefined') {
            options.clearContents = true;
        }
        
        // Hack to disable withFriends, twitter changed their API so this requires auth
        // http://getsatisfaction.com/twitter/topics/friends_timeline_api_call_suddenly_requires_auth
        if (options.withFriends) options.withFriends = false;

        // need to make these global since we can't pass in to the twitter callback
        options['twitterTarget'] = target;
        
        // default enable links
        if (typeof options.enableLinks == 'undefined') options.enableLinks = true;

        // this looks scary, but it actually allows us to have more than one twitter
        // status on the page, which in the case of my example blog - I do!
        window['twitterCallback' + guid] = function (obj) {
            if (options.timeout) {
                clearTimeout(window['twitterTimeout' + guid]);
            }
            renderTwitters(obj, options);
        };

        // check out the mad currying!
        ready((function(options, guid) {
            return function () {
                // if the element isn't on the DOM, don't bother
                if (!document.getElementById(options.twitterTarget)) {
                    return;
                }
                
                var url = 'http://www.twitter.com/statuses/' + (options.withFriends ? 'friends_timeline' : 'user_timeline') + '/' + id + '.json?callback=twitterCallback' + guid + '&count=20';

                if (options.timeout) {
                    window['twitterTimeout' + guid] = setTimeout(function () {
                        // cancel callback
                        if (options.onTimeoutCancel) window['twitterCallback' + guid] = function () {};
                        options.onTimeout.call(document.getElementById(options.twitterTarget));
                    }, options.timeout * 1000);
                }
                
                var script = document.createElement('script');
                script.setAttribute('src', url);
                document.getElementsByTagName('head')[0].appendChild(script);
            };
        })(options, guid));
    };
    
    // GO!
    DOMReady();
    

    /** Private functions */
    
    function getTwitterData(orig) {
        var data = orig, i;
        for (i in orig.user) {
            data['user_' + i] = orig.user[i];
        }
        
        data.time = relative_time(orig.created_at);
        
        return data;
    }
    
    function ready(callback) {
        if (!isReady) {
            readyList.push(callback);
        } else {
            callback.call();
        }
    }
    
    function fireReady() {
        isReady = true;
        var fn;
        while (fn = readyList.shift()) {
            fn.call();
        }
    }

    // ready and browser adapted from John Resig's jQuery library (http://jquery.com)
    function DOMReady() {
        if ( browser.mozilla || browser.opera ) {
            document.addEventListener( "DOMContentLoaded", fireReady, false );
        } else if ( browser.msie ) {
            // If IE is used, use the excellent hack by Matthias Miller
            // http://www.outofhanwell.com/blog/index.php?title=the_window_onload_problem_revisited

            // Only works if you document.write() it
            document.write("<scr" + "ipt id=__ie_init defer=true src=//:><\/script> ");

            // Use the defer script hack
            var script = document.getElementById("__ie_init");

            // script does not exist if jQuery is loaded dynamically
            if (script) {
                script.onreadystatechange = function() {
                    if ( this.readyState != "complete" ) return;
                    this.parentNode.removeChild( this );
                    fireReady.call();
                };
            }

            // Clear from memory
            script = null;

            // If Safari  is used
        } else if ( browser.safari ) {
            // Continually check to see if the document.readyState is valid
            var safariTimer = setInterval(function () {
                // loaded and complete are both valid states
                if ( document.readyState == "loaded" || 
                document.readyState == "complete" ) {

                    // If either one are found, remove the timer
                    clearInterval( safariTimer );
                    safariTimer = null;
                    // and execute any waiting functions
                    fireReady.call();
                }
            }, 10);
        }
    }
    
    function relative_time(time_value) {
        var values = time_value.split(" ");
        time_value = values[1] + " " + values[2] + ", " + values[5] + " " + values[3];
        var parsed_date = Date.parse(time_value);
        var relative_to = (arguments.length > 1) ? arguments[1] : new Date();
        var delta = parseInt((relative_to.getTime() - parsed_date) / 1000);
        delta = delta + (relative_to.getTimezoneOffset() * 60);

        var r = '';
        if (delta < 60) {
            r = 'less than a minute ago';
        } else if(delta < 120) {
            r = 'about a minute ago';
        } else if(delta < (45*60)) {
            r = (parseInt(delta / 60)).toString() + ' minutes ago';
        } else if(delta < (2*90*60)) { // 2* because sometimes read 1 hours ago
            r = 'about an hour ago';
        } else if(delta < (24*60*60)) {
            r = 'about ' + (parseInt(delta / 3600)).toString() + ' hours ago';
        } else if(delta < (48*60*60)) {
            r = '1 day ago';
        } else {
            r = (parseInt(delta / 86400)).toString() + ' days ago';
        }

        return r;
    }

    function linkify(s) {
        return s.replace(/[A-Za-z]+:\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_:%&\?\/.=]+/g, function(m) {
            return m.link(m);
        }).replace(/@[\S]+/g, function(m) {
            return '<a href="http://twitter.com/' + m.substr(1) + '">' + m + '</a>';
        });
    }
})();
					
					
					/* ---------------- lightbox ------------------*/
/*
	Lightbox JS: Fullsize Image Overlays 
	by Lokesh Dhakar - http://www.huddletogether.com

	For more information on this script, visit:
	http://huddletogether.com/projects/lightbox/

	Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
	(basically, do anything you want, just leave my name and link)
	
	Table of Contents
	-----------------
	Configuration
	
	Functions
	- getPageScroll()
	- getPageSize()
	- pause()
	- getKey()
	- listenKey()
	- showLightbox()
	- hideLightbox()
	- initLightbox()
	- addLoadEvent()
	
	Function Calls
	- addLoadEvent(initLightbox)

*/



//
// Configuration
//

// If you would like to use a custom loading image or close button reference them in the next two lines.
var loadingImage = 'images/loading.gif';		
var closeButton = 'images/close.gif';		





//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){

	var yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}

	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
}



//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}


	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}


//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
//
function pause(numberMillis) {
	var now = new Date();
	var exitTime = now.getTime() + numberMillis;
	while (true) {
		now = new Date();
		if (now.getTime() > exitTime)
			return;
	}
}

//
// getKey(key)
// Gets keycode. If 'x' is pressed then it hides the lightbox.
//

function getKey(e){
	if (e == null) { // ie
		keycode = event.keyCode;
	} else { // mozilla
		keycode = e.which;
	}
	key = String.fromCharCode(keycode).toLowerCase();
	
	if(key == 'x'){ hideLightbox(); }
}


//
// listenKey()
//
function listenKey () {	document.onkeypress = getKey; }
	

//
// showLightbox()
// Preloads images. Pleaces new image in lightbox then centers and displays.
//
function showLightbox(objLink)
{
	// prep objects
	var objOverlay = document.getElementById('overlay');
	var objLightbox = document.getElementById('lightbox');
	var objCaption = document.getElementById('lightboxCaption');
	var objImage = document.getElementById('lightboxImage');
	var objLoadingImage = document.getElementById('loadingImage');
	var objLightboxDetails = document.getElementById('lightboxDetails');

	
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	// center loadingImage if it exists
	if (objLoadingImage) {
		objLoadingImage.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - objLoadingImage.height) / 2) + 'px');
		objLoadingImage.style.left = (((arrayPageSize[0] - 20 - objLoadingImage.width) / 2) + 'px');
		objLoadingImage.style.display = 'block';
	}

	// set height of Overlay to take up whole page and show
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';

	// preload image
	imgPreload = new Image();

	imgPreload.onload=function(){
		objImage.src = objLink.href;

		// center lightbox and make sure that the top and left values are not negative
		// and the image placed outside the viewport
		var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2);
		var lightboxLeft = ((arrayPageSize[0] - 20 - imgPreload.width) / 2);
		
		objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
		objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";


		objLightboxDetails.style.width = imgPreload.width + 'px';
		
		if(objLink.getAttribute('title')){
			objCaption.style.display = 'block';
			//objCaption.style.width = imgPreload.width + 'px';
			objCaption.innerHTML = objLink.getAttribute('title');
		} else {
			objCaption.style.display = 'none';
		}
		
		// A small pause between the image loading and displaying is required with IE,
		// this prevents the previous image displaying for a short burst causing flicker.
		if (navigator.appVersion.indexOf("MSIE")!=-1){
			pause(250);
		} 

		if (objLoadingImage) {	objLoadingImage.style.display = 'none'; }

		// Hide select boxes as they will 'peek' through the image in IE
		selects = document.getElementsByTagName("select");
        for (i = 0; i != selects.length; i++) {
                selects[i].style.visibility = "hidden";
        }

	
		objLightbox.style.display = 'block';

		// After image is loaded, update the overlay height as the new image might have
		// increased the overall page height.
		arrayPageSize = getPageSize();
		objOverlay.style.height = (arrayPageSize[1] + 'px');
		
		// Check for 'x' keypress
		listenKey();

		return false;
	}

	imgPreload.src = objLink.href;
	
}





//
// hideLightbox()
//
function hideLightbox()
{
	// get objects
	objOverlay = document.getElementById('overlay');
	objLightbox = document.getElementById('lightbox');

	// hide lightbox and overlay
	objOverlay.style.display = 'none';
	objLightbox.style.display = 'none';

	// make select boxes visible
	selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "visible";
	}

	// disable keypress listener
	document.onkeypress = '';
}




//
// initLightbox()
// Function runs on window load, going through link tags looking for rel="lightbox".
// These links receive onclick events that enable the lightbox display for their targets.
// The function also inserts html markup at the top of the page which will be used as a
// container for the overlay pattern and the inline image.
//
function initLightbox()
{
	
	if (!document.getElementsByTagName){ return; }
	var anchors = document.getElementsByTagName("a");

	// loop through all anchor tags
	for (var i=0; i<anchors.length; i++){
		var anchor = anchors[i];

		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "lightbox")){
			anchor.onclick = function () {showLightbox(this); return false;}
		}
	}

	// the rest of this code inserts html at the top of the page that looks like this:
	//
	// <div id="overlay">
	//		<a href="#" onclick="hideLightbox(); return false;"><img id="loadingImage" /></a>
	//	</div>
	// <div id="lightbox">
	//		<a href="#" onclick="hideLightbox(); return false;" title="Click anywhere to close image">
	//			<img id="closeButton" />		
	//			<img id="lightboxImage" />
	//		</a>
	//		<div id="lightboxDetails">
	//			<div id="lightboxCaption"></div>
	//			<div id="keyboardMsg"></div>
	//		</div>
	// </div>
	
	var objBody = document.getElementsByTagName("body").item(0);
	
	// create overlay div and hardcode some functional styles (aesthetic styles are in CSS file)
	var objOverlay = document.createElement("div");
	objOverlay.setAttribute('id','overlay');
	objOverlay.onclick = function () {hideLightbox(); return false;}
	objOverlay.style.display = 'none';
	objOverlay.style.position = 'absolute';
	objOverlay.style.top = '0';
	objOverlay.style.left = '0';
	objOverlay.style.zIndex = '90';
 	objOverlay.style.width = '100%';
	objBody.insertBefore(objOverlay, objBody.firstChild);
	
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	// preload and create loader image
	var imgPreloader = new Image();
	
	// if loader image found, create link to hide lightbox and create loadingimage
	imgPreloader.onload=function(){

		var objLoadingImageLink = document.createElement("a");
		objLoadingImageLink.setAttribute('href','#');
		objLoadingImageLink.onclick = function () {hideLightbox(); return false;}
		objOverlay.appendChild(objLoadingImageLink);
		
		var objLoadingImage = document.createElement("img");
		objLoadingImage.src = loadingImage;
		objLoadingImage.setAttribute('id','loadingImage');
		objLoadingImage.style.position = 'absolute';
		objLoadingImage.style.zIndex = '150';
		objLoadingImageLink.appendChild(objLoadingImage);

		imgPreloader.onload=function(){};	//	clear onLoad, as IE will flip out w/animated gifs

		return false;
	}

	imgPreloader.src = loadingImage;

	// create lightbox div, same note about styles as above
	var objLightbox = document.createElement("div");
	objLightbox.setAttribute('id','lightbox');
	objLightbox.style.display = 'none';
	objLightbox.style.position = 'absolute';
	objLightbox.style.zIndex = '100';	
	objBody.insertBefore(objLightbox, objOverlay.nextSibling);
	
	// create link
	var objLink = document.createElement("a");
	objLink.setAttribute('href','#');
	objLink.setAttribute('title','Click to close');
	objLink.onclick = function () {hideLightbox(); return false;}
	objLightbox.appendChild(objLink);

	// preload and create close button image
	var imgPreloadCloseButton = new Image();

	// if close button image found, 
	imgPreloadCloseButton.onload=function(){

		var objCloseButton = document.createElement("img");
		objCloseButton.src = closeButton;
		objCloseButton.setAttribute('id','closeButton');
		objCloseButton.style.position = 'absolute';
		objCloseButton.style.zIndex = '200';
		objLink.appendChild(objCloseButton);

		return false;
	}

	imgPreloadCloseButton.src = closeButton;

	// create image
	var objImage = document.createElement("img");
	objImage.setAttribute('id','lightboxImage');
	objLink.appendChild(objImage);
	
	// create details div, a container for the caption and keyboard message
	var objLightboxDetails = document.createElement("div");
	objLightboxDetails.setAttribute('id','lightboxDetails');
	objLightbox.appendChild(objLightboxDetails);

	// create caption
	var objCaption = document.createElement("div");
	objCaption.setAttribute('id','lightboxCaption');
	objCaption.style.display = 'none';
	objLightboxDetails.appendChild(objCaption);

	// create keyboard message
	var objKeyboardMsg = document.createElement("div");
	objKeyboardMsg.setAttribute('id','keyboardMsg');
	//objKeyboardMsg.innerHTML = 'press <a href="#" onclick="hideLightbox(); return false;"><kbd>x</kbd></a> to close';
	objLightboxDetails.appendChild(objKeyboardMsg);


}




//
// addLoadEvent()
// Adds event to window.onload without overwriting currently assigned onload functions.
// Function found at Simon Willison's weblog - http://simon.incutio.com/
//
function addLoadEvent(func)
{	
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
    	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}

}



addLoadEvent(initLightbox);	// run initLightbox onLoad