/*
Created By: Chris Campbell
Website: http://particletree.com
Date: 2/1/2006

Adapted By: Simon de Haan
Website: http://blog.eight.nl
Date: 21/2/2006

Inspired by the lightbox implementation found at http://www.huddletogether.com/projects/lightbox/
And the lightbox gone wild by ParticleTree at http://particletree.com/features/lightbox-gone-wild/

*/

/*-------------------------------GLOBAL VARIABLES------------------------------------*/

var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;

/*-----------------------------------------------------------------------------------------------*/

//Browser detect script origionally created by Peter Paul Koch at http://www.quirksmode.org/

function getBrowserInfo() {
	if (checkIt('konqueror')) {
		browser = "Konqueror";
		OS = "Linux";
	}
	else if (checkIt('safari')) browser 	= "Safari"
	else if (checkIt('omniweb')) browser 	= "OmniWeb"
	else if (checkIt('opera')) browser 		= "Opera"
	else if (checkIt('webtv')) browser 		= "WebTV";
	else if (checkIt('icab')) browser 		= "iCab"
	else if (checkIt('msie')) browser 		= "Internet Explorer"
	else if (!checkIt('compatible')) {
		browser = "Netscape Navigator"
		version = detect.charAt(8);
	}
	else browser = "An unknown browser";

	if (!version) version = detect.charAt(place + thestring.length);

	if (!OS) {
		if (checkIt('linux')) OS 		= "Linux";
		else if (checkIt('x11')) OS 	= "Unix";
		else if (checkIt('mac')) OS 	= "Mac"
		else if (checkIt('win')) OS 	= "Windows"
		else OS 								= "an unknown operating system";
	}
}

function checkIt(string) {
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}

/*-----------------------------------------------------------------------------------------------*/

Event.observe(window, 'load', initialize, false);
Event.observe(window, 'load', getBrowserInfo, false);
Event.observe(window, 'unload', Event.unloadCache, false);

var lightbox = Class.create();
var lightboxArray = new Array();

var contentArray = new Array();
contentArray["photos"] = "photos.htm";
contentArray["videos"] = "videos.php";
contentArray["maps"] = "maps.htm";
contentArray["sponsor_gm"] = "sponsors.php?sponsor=gm";
contentArray["sponsor_nyx"] = "sponsors.php?sponsor=nyx";
contentArray["sponsor_khalsa"] = "sponsors.php?sponsor=khalsa";
contentArray["sponsor_bb"] = "sponsors.php?sponsor=bb";
contentArray["sponsor_namesake"] = "sponsors.php?sponsor=namesake";
contentArray["sponsor_singh"] = "sponsors.php?sponsor=singh";
contentArray["sponsor_travel"] = "sponsors.php?sponsor=travel";
contentArray["sponsor_bhullar"] = "sponsors.php?sponsor=bhullar";
contentArray["sponsor_dentist"] = "sponsors.php?sponsor=dentist";
contentArray["sponsor_costume"] = "sponsors.php?sponsor=costume";
contentArray["hotel"] = "hotel.htm";


/*
var slideshow = '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0" width="450" height="300" id="slideshow" align="middle"><param name="allowScriptAccess" value="sameDomain" /><param name="movie" value="slideshow/slideshow.swf" /><param name="quality" value="high" /><param name="bgcolor" value="#1a2122" /><embed src="slideshow/slideshow.swf" quality="high" bgcolor="#1a2122" width="450" height="300" name="slideshow" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" /></object>';
*/

lightbox.prototype = {

	yPos : 0,
	xPos : 0,

	initialize: function(ctrl) {
		this.content = ctrl.rel;
		Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false);
		ctrl.onclick = function(){return false;};
		
		lightboxArray[ctrl.rel] = this;
	},
	
	// Turn everything on - mainly the IE fixes
	activate: function(){
		if (browser == 'Internet Explorer'){
			this.getScroll();
			this.prepareIE('100%', 'hidden');
			this.setScroll(0,0);
			this.hideSelects('hidden');
		}
		this.displayLightbox("block");

		document.getElementById("decorcurl").style.display= '';
		el = document.getElementById(this.content);
		el.innerHTML = '<div style="position:relative; left:120px; width:780px;">' +
				'<table width="660" height="400" cellpadding="0" cellspacing="0" border="0">' + 
				'<tr height="10" valign="top">' +
				'<td width="10" class="yellowBackground"></td>' +
				'<td width="630" class="yellowBackground"></td>' +
				'<td width="10" class="yellowBackground"></td>' +
				'</tr>' +
				'<tr valign="top">' +
				'<td class="yellowBackground">&nbsp;</td>' +
				'<td bgcolor="#1a2122" align="center">' +
				'<table width="630" height="350" cellpadding="0" cellspacing="0" border="0">' +
				'<tr height="14">' +
				'<td width="554">&nbsp;</td>' +
		    	'<td align="center" valign="top" width="76" style="background:url(images/closeback.jpg) bottom center no-repeat; background-color:#000000"><a href="javascript:deactivate(\'' + this.content + '\');">close</a></td>' +
		   	'<td>&nbsp;</td>' +
				'</tr>' +
				'<tr>' +
				'<td colspan="3" align="center">' +
				'<iframe src="' + contentArray[this.content] + '" frameborder="0" width="630" height="350" scrolling="no"></iframe>' +
				'</td>' +
				'</tr>' +
				'</table>' +
				'</td>' +
				'<td class="yellowBackground">&nbsp;</td>' +
				'</tr>' +
				'<tr height="10" valign="top">' +
				'<td colspan="3" class="yellowBackground"></td>' +
			   '</tr>' +
			   '</table>' +
			   '</div>';
	},
	
	// Ie requires height to 100% and overflow hidden or else you can scroll down past the lightbox
	prepareIE: function(height, overflow){
		bod = document.getElementsByTagName('body')[0];
		bod.style.height = height;
		bod.style.overflow = overflow;
  
		htm = document.getElementsByTagName('html')[0];
		htm.style.height = height;
		htm.style.overflow = overflow; 
	},
	
	// In IE, select elements hover on top of the lightbox
	hideSelects: function(visibility){
		selects = document.getElementsByTagName('select');
		for(i = 0; i < selects.length; i++) {
			selects[i].style.visibility = visibility;
		}
	},
	
	// Taken from lightbox implementation found at http://www.huddletogether.com/projects/lightbox/
	getScroll: function(){
		if (self.pageYOffset) {
			this.yPos = self.pageYOffset;
		} else if (document.documentElement && document.documentElement.scrollTop){
			this.yPos = document.documentElement.scrollTop; 
		} else if (document.body) {
			this.yPos = document.body.scrollTop;
		}
	},
	
	setScroll: function(x, y){
		window.scrollTo(x, y); 
	},
	
	displayLightbox: function(display){
		$('overlay').style.display = display;
		$(this.content).style.display = display;
		if(display != 'none') this.actions();		
	},
	
	// Search through new links within the lightbox, and attach click event
	actions: function(){
		lbActions = document.getElementsByClassName('lbAction');

		for(i = 0; i < lbActions.length; i++) {
			Event.observe(lbActions[i], 'click', this[lbActions[i].rel].bindAsEventListener(this), false);
			lbActions[i].onclick = function(){return false;};
		}

	},
	
	// Example of creating your own functionality once lightbox is initiated
	deactivate: function(){
	
		el = document.getElementById(this.content);
		el.innerHTML = '';
	
		if (browser == "Internet Explorer"){
			this.setScroll(0,this.yPos);
			this.prepareIE("auto", "auto");
			this.hideSelects("visible");
		}
		
		this.displayLightbox("none");
	
		document.getElementById("decorcurl").style.display= 'none';
	}
}

/*-----------------------------------------------------------------------------------------------*/

// Onload, make all links that need to trigger a lightbox active
function initialize(){
	addLightboxMarkup();
	lbox = document.getElementsByClassName('lbOn');
	
	lightboxArray = new Array(lbox.length);
	for(i = 0; i < lbox.length; i++) {
		valid = new lightbox(lbox[i]);
	}
}

function deactivate(lbox){
	lightboxArray[lbox].deactivate();
}

// Add in markup necessary to make this work. Basically two divs:
// Overlay holds the shadow
// Lightbox is the centered square that the content is put into.
function addLightboxMarkup() {

	bod 				= document.getElementsByTagName('body')[0];
}
