/*
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

Converted to MooTools By: Chip Hilseberg
Website: http://chip.pixelfaction.com
Date: 10/3/2009

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;
}

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

window.addEvent('load', initialize);
window.addEvent('load', getBrowserInfo);

var lightbox = new Class(
	{

		yPos : 0,
		xPos : 0,
	

	    initialize: function(ctrlName) {
			this.content = ctrlName;
		},
	
		// 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");
		},
	
		// 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;
		},

	
		// Example of creating your own functionality once lightbox is initiated
		deactivate: function(){
			if (browser == "Internet Explorer"){
				//this.setScroll(0,this.yPos);
				this.prepareIE("100%", "hidden");
				this.hideSelects("visible");
			}
	
			this.displayLightbox("none");
		}
	}
);

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

// Onload, make all links that need to trigger a lightbox active
function initialize(){
	addLightboxMarkup();
}

// 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];

	overlay 			= document.createElement('div');
	overlay.id			= 'overlay';

	bod.appendChild(overlay);
}