/*
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 currentlb;
var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;
var loadedobjects=""
/*-----------------------------------------------------------------------------------------------*/

//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 = 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 (browser == 'Internet Explorer'){
			this.getScroll();
			this.prepareIE('100%', 'hidden');
			this.setScroll(0,0);
			this.hideSelects('hidden');
		}
   obj = document.getElementsByTagName('object');
	for(i = 0; i < obj.length; i++) {
		obj[i].style.display = 'none';
	}
		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){
	  currentlb = this;
		$('overlay').style.display = display;
		$('lightbox').style.display = display;
		if(display == 'none') currentlb = false;
		if(display != 'none') this.loadInfo();
		scroll(0,0);
	},
	
	// 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
	insert: function(e){
	   link = Event.element(e);
	   Element.remove($('lbContent'));

	   var myAjax = new Ajax.Request(
			  link.href,
			  {method: 'post', 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");
		}
   obj = document.getElementsByTagName('object');
	for(i = 0; i < obj.length; i++) {
		obj[i].style.display = '';
	}
		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]);
	}
}

// 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);
	lbox = document.getElementsByClassName('lbAuto'); 
	for(i = 0; i < lbox.length; i++) { 
	valid = new lightbox(lbox[i]); $('overlay').style.backgroundColor = "#000000";valid.activate();
    }
}

function lightForm(formen){
status = validateLightForm();
if (status=='OK') {
$(formen).request({
  onComplete: function(transport){ $('lbContent').update(transport.responseText); currentlb.actions();}
});
}
else {
alert(status);
}
return false;
}

function loadobjs(){
if (!document.getElementById)
return
for (i=0; i<arguments.length; i++){
load = true;

var file=arguments[i];

var fileref="";
if (loadedobjects.indexOf(file)==-1){ 
if (file.indexOf(".js")!=-1 || file.indexOf(".php")!=-1){ 
 elms = document.getElementsByTagName("script");
 for (ix=0; ix<elms.length; ix++) {
 if (elms[ix].src == "http://"+document.domain+file)
  load = false;
 }
 
fileref=document.createElement('script')
fileref.setAttribute("type","text/javascript");
fileref.setAttribute("src", file);
}
else if (file.indexOf(".css")!=-1){ 
fileref=document.createElement("link")
fileref.setAttribute("rel", "stylesheet");
fileref.setAttribute("type", "text/css");
fileref.setAttribute("href", file);
}
}
if (fileref!=""){
if (load == true)
document.getElementsByTagName("head").item(0).appendChild(fileref)
loadedobjects+=file+" " 
}
}
}


function validateLightForm() {
 required = document.getElementsByClassName('lbReq');

 for(i = 0; i < required.length; i++) {
	if (required[i].value.length == 0)
	return 'Du måste fylla i alla fält markerade med *';
	}
	
	if ($('Epost')) {
	    if ($('Epost').className=='lbReq') {
		if (lbEmail($('Epost').value) == false) {
		  return "Du har angett en inkorrekt e-postadress";
		  return false;
		  }
		}
		 
	}
	
	if ($('Email')) {
	    if ($('Email').className=='lbReq') {
		 if (lbEmail($('Email').value) == false) {
		  return "Du har angett en inkorrekt e-postadress";
		  
		  }
		
		}
	}
	
return 'OK';

}

function lbEmail(field)
{

  apos=field.indexOf("@");
  dotpos=field.lastIndexOf(".");
  if (apos<1||dotpos-apos<2)
    {return false;}
  else {return true;}
 
}