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

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

/*-------------------------------GLOBAL VARIABLES------------------------------------*/

var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;
var lbStartUrl,lbStartWidth,lbStartHeight;

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

//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();

lightbox.prototype = {

	yPos : 0,
	xPos : 0,

	initialize: function(ctrl) {
		if (ctrl!=null) {
			this.content = ctrl.href;
			Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false);
			this.size = ctrl.rel;
			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');
		}

		var arrSize = this.size.split('x');

		$('lightbox').style.width = arrSize[0]+'px';

		$('lightbox').style.marginLeft = '-' + (arrSize[0]/2) + 'px';

		$('lightbox').style.height = arrSize[1]+'px';
		$('lightbox').style.marginTop = '-' + (arrSize[1]/2) + 'px';



		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;
		$('lightbox').style.display = display;
		//alert('tyty');
		if(display != 'none') this.loadInfo();
	},

	// Begin Ajax request based off of the href of the clicked linked
	loadInfo: function() {
		var myAjax = new Ajax.Request(
        this.content,
        {method: 'get', parameters: "", onComplete: this.processInfo.bindAsEventListener(this)}
		);

	},

	// Display Ajax response
	processInfo: function(response){
		info = "<div id='lbContent'>" + response.responseText + "</div>";
		new Insertion.Before($('lbLoadMessage'), info)
		$('lightbox').className = "done";
		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
	insert: function(e){
	   //link = Event.element(e).parentNode;
	   link = Event.element(e);
	   Element.remove($('lbContent'));


		   var myAjax = new Ajax.Request(
				  link.href,
				  {method: 'get', parameters: "", onComplete: this.processInfo.bindAsEventListener(this)}
		   );

	},

	// Example of creating your own functionality once lightbox is initiated
	deactivate: function(){
		Element.remove($('lbContent'));

		if (browser == "Internet Explorer"){

			this.setScroll(0,this.yPos);

			this.prepareIE("auto", "auto");

			this.hideSelects("visible");
		}

		this.displayLightbox("none");
	}
}

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

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

	addLightboxMarkup();

	lbox = document.getElementsByClassName('lbOn');
	for(i = 0; i < lbox.length; i++) {
		valid = new lightbox(lbox[i]);
	}


	if (typeof lbStartUrl!='undefined' && lbStartUrl!='' && lbStartWidth!=0 && lbStartHeight!=0) {
		openLightBox(lbStartUrl,lbStartWidth,lbStartHeight)

	}

}

// 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';
	lb					= document.createElement('div');
	lb.id				= 'lightbox';
	lb.className 	= 'loading';
	lb.innerHTML	= '<div id="lbLoadMessage" style="background-color:#fefefe;border:1px solid #b23c83; width:200px;height:150px;margin:auto;text-align:center;font-family:Arial, Helvetica, sans-serif;color:#404040;font-size:13px;font-weight:bold;">' +
							'<br /><br /><img src="/img/loader2.gif" alt="" style="margin:auto;"/>' +
						  '<br /><br /><p>Chargement en cours !</p>' +
						  '</div>';

	bod.appendChild(overlay);
	bod.appendChild(lb);

}


function postForm(formId) {
	document.getElementById('pageBody').style.cursor="wait";
	var pars = Form.serialize(formId);
	var elem =$(formId);
	var myAjax = new Ajax.Request( elem.action, {method: 'post', parameters: pars, onComplete: refreshBody}
   		);
}


function lbRefresh(url,target) {



	document.getElementsByTagName('body')[0].style.cursor="wait";
	if (target=="main") {
		var myAjax = new Ajax.Request( url, {method: 'get', parameters: "", onComplete: refreshMain});
	} else {
		var myAjax = new Ajax.Request( url, {method: 'get', parameters: "", onComplete: refreshBody});

	}
}


function refreshBody(request) {
	$('lightbox').className = "loading";
	document.getElementsByTagName('body')[0].style.cursor="auto";
	$('mainwin').scrollTop=0;
	new Element.update('mainwin',request.responseText);
	$('lightbox').className = "done";
}

function refreshMain(request) {
	$('lightbox').className = "loading";
	document.getElementsByTagName('body')[0].style.cursor="auto";
	$('mainwin').scrollTop=0;
	new Element.update('lbContent',request.responseText);
	$('lightbox').className = "done";
}

function initContent(url) {
	var myAjax = new Ajax.Request( url, {method: 'post', parameters: "", onComplete: refreshBody}
   		);
}


function openLightBox(url,width,height) {

    var popup = new lightbox(null);

    popup.size=width+"x"+height;

    popup.content = url;

    popup.activate();

}



function closeLightBox() {



		if (browser == "Internet Explorer"){
		    var popup = new lightbox(null);
			popup.setScroll(0,popup.yPos);

			popup.prepareIE("auto", "auto");

			popup.hideSelects("visible");


			/*window.scrollTo(0,0);
			bod = document.getElementsByTagName('body')[0];

			bod.style.height = "auto";
			bod.style.overflow = "auto";;

			htm = document.getElementsByTagName('html')[0];
			htm.style.height = "auto";
			htm.style.overflow = "auto";
			selects = document.getElementsByTagName('select');
			for(i = 0; i < selects.length; i++) {
				selects[i].style.visibility = visibility;
			}*/

		}





	if ($('lbContent') != null)
		Element.remove($('lbContent'));
	if ($('overlay') != null)
		$('overlay').style.display = "none";
	if ($('lightbox') != null)
		$('lightbox').style.display = "none";
}