/*
Created By: Chris Campbell
Website: http://particletree.com
Date: 2/1/2006

Inspired by the lightbox2 implementation found at http://www.huddletogether.com/projects/lightbox2/
*/

/*-------------------------------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;
}

/*-----------------------------------------------------------------------------------------------*/

Element.observe(window,'load', initialize);
Element.observe(window,'load', getBrowserInfo);

var lightbox2 = Class.create();

lightbox2.prototype = {

	yPos : 0,
	xPos : 0,

	initialize: function(ctrl) {
		//alert(ctrl.href);
		this.content = ctrl.href;
		this.typeOfLb = ctrl.className;
		Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false);
		ctrl.onclick = function(){return false;};
	},
	
	// 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.hideObjects('hidden');
		this.hideEmbed('hidden');
		//alert(this.typeOfLb);
		if(this.typeOfLb == "lbOn"){
			this.displaylightbox2("block");
		}
		else{
			this.displaylightbox2a("block");
		}
	},
	
	// Ie requires height to 100% and overflow hidden or else you can scroll down past the lightbox2
	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 lightbox2
	hideSelects: function(visibility){
		selects = document.getElementsByTagName('select');
		for(i = 0; i < selects.length; i++) {
			selects[i].style.visibility = visibility;
		}
	},
	hideObjects: function(visibility){
		objects = document.getElementsByTagName('object');
		for(i = 0; i < objects.length; i++) {
			objects[i].style.visibility = visibility;
		}
	},
	hideEmbed: function(visibility){
		embed = document.getElementsByTagName('embed');
		for(i = 0; i < embed.length; i++) {
			embed[i].style.visibility = visibility;
		}
	},
	
	// Taken from lightbox2 implementation found at http://www.huddletogether.com/projects/lightbox2/
	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); 
	},
	
	displaylightbox2: function(display){
		$('overlay2').style.display = display;
		$('lightbox2').style.display = display;
		if(display != 'none') this.loadInfo();
	},
	displaylightbox2a: function(display){
		$('overlay2').style.display = display;
		$('lightbox2a').style.display = display;
		if(display != 'none') this.loadInfo();
	},
	
	// Begin Ajax request based off of the href of the clicked linked
	loadInfo: function() {
		//alert(this.content);
		var myAjax = new Ajax.Request(
        this.content,
        {method: 'post', parameters: "", onComplete: this.processInfo.bindAsEventListener(this)}
		);
		
	},
	
	// Display Ajax response
	processInfo: function(response){
		
		info = "<div id='lbContent'>" + response.responseText + "</div>";
		
		if(this.typeOfLb == "lbOn"){
			new Insertion.Before($('lbLoadMessage'), info);
			$('lightbox2').className = "done";	
		}
		else{
			new Insertion.Before($('lbLoadMessage2'), info);
			$('lightbox2a').className = "done";	
		}
		this.actions();			
	},
	
	// Search through new links within the lightbox2, and attach click event
	actions: function(){
		lbActions = document.getElementsByClassName('lbAction');
		//alert(lbActions);
		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 lightbox2 is initiated
	insert: function(e){
	   
		var el = Event.element(e);
			
		while(!el.href && el.parentNode)
			el = el.parentNode;
			
		var forms = $('lbContent').getElementsByTagName('form');
		
		var formvalues = Form.serialize(forms[0],true);
		
					
		Element.remove($('lbContent'));
			   
		var myAjax = new Ajax.Request(
			el.href,
			{method: 'post', parameters:formvalues, onComplete: this.processInfo.bindAsEventListener(this)}
		);
	 
	},
	
	// Example of creating your own functionality once lightbox2 is initiated
	deactivate: function(){
		Element.remove($('lbContent'));
		
		if (browser == "Internet Explorer"){
			this.setScroll(0,this.yPos);
			this.prepareIE("auto", "auto");
		}
		this.hideSelects('visible');
		this.hideObjects('visible');
		this.hideEmbed('visible');
		if(this.typeOfLb == "lbOn"){
			this.displaylightbox2("none");
		}
		else{
			this.displaylightbox2a("none");
		}
	}
}

/*-----------------------------------------------------------------------------------------------*/

// Onload, make all links that need to trigger a lightbox2 active
var popup;
var popup2;

function initialize(){
	addlightbox2Markup();
	addlightbox2aMarkup();
	lbox = document.getElementsByClassName('lbOn');
	lbox2 = document.getElementsByClassName('lbOn2');
	for(i = 0; i < lbox.length; i++){
		popup = new lightbox2(lbox[i]);
		lbox[i].style.visibility='visible';
	}
	for(i = 0; i < lbox2.length; i++){
		popup2 = new lightbox2(lbox2[i]);
		lbox2[i].style.visibility='visible';
	}
}

// Add in markup necessary to make this work. Basically two divs:
// overlay2 holds the shadow
// lightbox2 is the centered square that the content is put into.
function addlightbox2Markup(){
	bod 				= document.getElementsByTagName('body')[0];
	overlay2 			= document.createElement('div');
	overlay2.id		= 'overlay2';
	lb					= document.createElement('div');
	lb.id				= 'lightbox2';
	lb.className 	= 'loading';
	lb.innerHTML	= '<div id="lbLoadMessage">' +
						  '<p>Loading</p>' +
						  '</div>';
	bod.appendChild(overlay2);
	bod.appendChild(lb);
}
function addlightbox2aMarkup(){
	bod 				= document.getElementsByTagName('body')[0];
	overlay2 			= document.createElement('div');
	overlay2.id		= 'overlay2';
	lb					= document.createElement('div');
	lb.id				= 'lightbox2a';
	lb.className 	= 'loading';
	lb.innerHTML	= '<div id="lbLoadMessage2">' +
						  '<p>Loading</p>' +
						  '</div>';
	bod.appendChild(overlay2);
	bod.appendChild(lb);
}