/*
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;

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

//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) {
			this.content = "/english/09_contact.php";//ctrl.href;
			Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false);
			ctrl.onclick = function(){return false;};
	},
	
	// Turn everything on - mainly the IE fixes
	activate: function(){
		if($('lightbox').style.display != "block") {
			this.setScroll(0,0);
			if (browser == 'Internet Explorer') {
				//this.getScroll();
				//this.prepareIE('100%', 'hidden');
				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){
		if (display == "block") {
			$('lightbox').setOpacity(0).show();
			
			this.loadInfo();
			//$('overlay').style.display = display;	
			new Effect.Opacity('lightbox', {duration:0.8, from:0, to:0.9,
				beforeSetup: function(effect) {
					$('lightbox').style.display = 'block';
				  }
				});
			
		}
		else {
			//$('overlay').style.display = display;
			
			new Effect.Opacity('lightbox',{
			    duration: 0.2,
			    from: 0.6,
				to: 0.1,
				transition: Effect.Transitions.wobble,
			    afterFinish: function() {
				    Element.remove($('lbContent'));
					new Effect.Scale('lightbox', 0, {
						duration: 0.3,
						scaleX: false,
						restoreAfterFinish: true,
						scaleContent: false,
						afterFinish: function(){
							$('lightbox').style.display = 'none';
							$('lightbox').setStyle({height : '570px'});
							if (display == "home") window.location.href="/index.html";
							}
					});}
			});	

		}
		
	},
	
	// 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){
		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
	send: function(e){
		var processScript = '/deutsch/09_contact_process.php';
		new Ajax.Request(processScript,
		  {
		    method:'get',
			parameters: Form.serialize($('form'), true),
		    onSuccess: function(transport){
		      var response = transport.responseText || "no response text";
			  // remove error markings
			  document.getElementsByClassName('error', $('form')).each(function(element) {element.removeClassName('error');})
		      if (response == "okay") {
					$('flash').update("Thank you for your interest, we will answer your request as soon as possible.");
					$('inputs').hide();
					$('send').hide();
					$('reset').hide();
					$('home').style.display='inline';
					new Effect.Scale('lightbox', 35, {
						duration: 0.3,
						scaleX: false})
				}
			  else {
				var errors = response.split(",");
				$('flash').update("For a detailed answer we need some more information from you - please correct the marked fields:");
				errors.each(function(item) {
							if(item == "subject") {
								$('subjecttable').addClassName('error');
								$('subject_label').addClassName('error');
							} else {
								$(item).addClassName('error');
								$(item+"_label").addClassName('error');
							}
						}
					)
				}
		    },
		    onFailure: function(){ alert('Something went wrong...') }
		  });
	 
	},
	
	reset: function(e){
		document.getElementsByClassName('error', $('form')).each(function(element) {element.removeClassName('error');});
		$('form').reset();
		$('flash').update("We would be pleased to hear from you via email:");
	 
	},
	
	
	// Example of creating your own functionality once lightbox is initiated
	deactivate: function(){
		//Element.remove($('lbContent'));
		this.setScroll(0,0);
		if (browser == "Internet Explorer"){
			//this.setScroll(0,this.yPos);
			//this.prepareIE("auto", "auto");
			this.hideSelects("visible");
		}
		
		this.displayLightbox("none");
	},
	
	home: function(){
		//Element.remove($('lbContent'));
		this.setScroll(0,0);
		if (browser == "Internet Explorer"){
			//this.setScroll(0,this.yPos);
			//this.prepareIE("auto", "auto");
			this.hideSelects("visible");
		}
		
		this.displayLightbox("home");
	}
}

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

function updateCounter(field) {
	if (field.value.length > 500) {
		field.value = field.value.substring(0, 499);
	}
	$('message_label').update('your request:<br/ >('+(500-field.value.length)+' characters left)')
}

// 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]);
	}
}

// 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">' +
						  '<p>Loading</p>' +
						  '</div>';
	bod.appendChild(overlay);
	bod.appendChild(lb);
	
}