/*
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 defaultLightbox;

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

//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', getBrowserInfo, false);
Event.observe(window, 'load', initialize, false);
Event.observe(window, 'unload', Event.unloadCache, false);

var lbstyle = 'standard';

var lightbox = Class.create();

lightbox.prototype = {

	yPos : 0,
	xPos : 0,
/*
loadContentLightbox('lb_main.php?action=build&field_build=34', false);
	initialize: function(ctrl) {
		this.content = ctrl.href;
		Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false);
		ctrl.onclick = function(){return false;};
	},
*/

	initialize: function(ctrl) { 
	
		if (ctrl.nodeName.toLowerCase() == 'a' || ctrl.nodeName.toLowerCase() == 'area') { 
			this.content = ctrl.href; 
			Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false); 
			ctrl.onclick = function(){return false;}; 
		} else if (ctrl.nodeName.toLowerCase() == 'form') { 
			this.content = ctrl.getAttribute('lbAction'); 
			if (browser != 'Internet Explorer') {
				this.loadInfo();
			} 
			//exclude other browsers here if you see multiple content blocks 
		
			Event.observe(ctrl, 'submit', this.activate.bindAsEventListener(this), false);
		} else { 
			return false; 
		}

	},
	
	// Turn everything on - mainly the IE fixes
	activate: function(update){

		//alert("update in activate: " + update);

		if (browser == 'Internet Explorer'){
			this.getScroll();
			this.prepareIE('100%', 'hidden');
			this.setScroll(0,0);
			this.hideSelects('hidden');
		}
		this.displayLightbox("block", update);
	},
	
	// Ie requires height to 100% and overflow hidden or else you can scroll down past the lightbox
	prepareIE: function(height, overflow, skipBod){
	
		if (! skipBod) {
			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,update){
	
		$('overlay').style.display = display;
		
		if (lbstyle == 'wood') {
			$('lightbox').className = 'loading lbwoodstyle';
		} else if (lbstyle == 'small') {
			$('lightbox').className = 'loading lbsmall';
		} else {
			$('lightbox').className = 'loading';
		}
		$('lightbox').style.display = display;
		
		if ((update == true || display == 'none') && typeof(resUpdateOnce) == 'function') {
			//alert("wird abgefragt");
			resUpdateOnce();
		}
		
		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: 'post', parameters: "", onComplete: this.processInfo.bindAsEventListener(this)}
		);
		
	},
	
	// Display Ajax response
	processInfo: function(response){

		hideAllTooltips();
		if (lbstyle == 'wood') {
			info = "<div id='lbContent'><a id='close_lb' href='#' class='lbAction wood' rel='close'></a>" + response.responseText + "</div>";
		} else if (lbstyle == 'small') {
			info = "<div id='lbContent'><a id='close_lb' href='#' class='lbAction small' rel='close'></a>" + response.responseText + "</div>";
		} else {
			info = "<div id='lbContent'><a id='close_lb' href='#' class='lbAction' rel='close'></a>" + response.responseText + "</div>";
		}
		new Insertion.Before($('lbLoadMessage'), info)
		if (lbstyle == 'wood') {
			$('lightbox').className = "done lbwoodstyle";	
		} else if (lbstyle == 'small') {
			$('lightbox').className = "done lbsmall";
		} else  {
			$('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);

	   while (link.tagName != 'A' && link.tagName != 'AREA') {
	   		link = link.parentNode;
	   }

       if (link.nodeType != 1) {
            link = Event.element(e).parentNode;
       }	   
	   
	   Element.remove($('lbContent'));
	   var myAjax = new Ajax.Request(
			  link.href,
			  {method: 'post', parameters: "", onComplete: this.processInfo.bindAsEventListener(this)}
	   );
	},
	
	loadContent: function(href){
	   
	   Element.remove($('lbContent'));
	   var myAjax = new Ajax.Request(
			  href,
			  {method: 'post', parameters: "", onComplete: this.processInfo.bindAsEventListener(this)}
	   );
	},	
	
	// Example of creating your own functionality once lightbox is initiated
	close: function(){
	
		Element.remove($('lbContent'));
		
		if (browser == "Internet Explorer"){
			this.setScroll(0,this.yPos);
			
			//this.prepareIE("auto", "auto");
			this.prepareIE("auto", "auto", true);
			//alert("close lb ie");
			
			this.hideSelects("visible");

		}
		
		this.displayLightbox("none");
		
		//if (typeof(resUpdateOnce) == 'function') resUpdateOnce();
		
	}
}

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

// Onload, make all links that need to trigger a lightbox active
function initialize(){
	
	lbox = document.getElementsByClassName('lbOn');
	
	for(i = 0; i < lbox.length; i++) {
		valid = new lightbox(lbox[i]);
		if (lbox[i].id == 'defaultLightbox') defaultLightbox = valid;	
		if (lbox[i].className == 'lbOn makeLBSmall') {
			lbstyle = 'small';
		} else if (lbox[i].className == 'lbOn makeLBWood') {
			lbstyle = 'wood';
		} else {
			//lbstyle = 'standard';
		}
	}
	addLightboxMarkup();
	activateDefaultLightBox();
}

// 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(lb_id) {

	bod 				= document.getElementsByTagName('body')[0];
	overlay 			= document.createElement('div');
	overlay.id			= 'overlay';
	lb					= document.createElement('div');
	lb.id				= 'lightbox';

	if (lbstyle == 'wood') {
		lb.className 	= 'loading lbwoodstyle';		// if (lbstyle == 'wood
	} else if (lbstyle == 'small') {
		lb.className 	= 'loading lbsmall';
	} else {
		lb.className 	= 'loading';
	}
	
	lb.innerHTML	= '<div id="lbLoadMessage">' +
						  '<p>Loading</p>' +
						  '</div>';
						  
	bod.appendChild(overlay);
	bod.appendChild(lb);
}

function activateDefaultLightBox() { 
	if(defaultLightbox != undefined) { 
		defaultLightbox.activate(); 
	} 
}