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

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

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

var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;
var loadingImage = 'imges/loading.gif';	

/*-----------------------------------------------------------------------------------------------*/
function pause(ms) {
	//alert('test');
	var date = new Date();
	var curDate = null;
	do { curDate = new Date(); }
	while(curDate-date < ms);
}

/*----------------------------------------------------------------------------------------------*/
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}


	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}

function getPageScroll(){

	var yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}

	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
}

//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 lightboxS = Class.create();

lightboxS.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');
		}
		this.displayLightboxS("block");
	},
	
	// Ie requires height to 100% and overflow hidden or else you can scroll down past the lightboxS
	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 lightboxS
	hideSelects: function(visibility){
		selects = document.getElementsByTagName('select');
		for(i = 0; i < selects.length; i++) {
			selects[i].style.visibility = visibility;
		}
	},
	
	// Taken from lightboxS implementation found at http://www.huddletogether.com/projects/lightboxS/
	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); 
	},
	
	displayLightboxS: function(display){
        var arrayPageSize = getPageSize();
        var arrayPageScroll = getPageScroll();

		$('overlayS').style.display = display;
		//$('lightboxS').style.display = display;
		if (display != 'none') {
            $('image').style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - 22) / 2) + 'px');
            $('image').style.left = (((arrayPageSize[0] - 20 - 126) / 2) + 'px');
			$('image').setStyle({
		        'display': 'block'
		    });
			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.processInfoS.bindAsEventListener(this)}
		);
		
	},
	
	// Display Ajax response
	processInfoS: function(response){
		info = "<div id='lbContentS' style='display:none'>" + response.responseText + "</div>";
		new Insertion.Top($('lightboxS'), info);
		$('image').setStyle({
	        'display': 'none'
	    });
		
		$cont = content(response.responseText);
		twoColumns($cont);
		//alert("test");
		//this.actions();
	},
	
	// Search through new links within the lightboxS, and attach click event
	actions: function(){
		lbActions = document.getElementsByClassName('lbActionS');
		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 lightboxS is initiated
	insert: function(e){
	   link = Event.element(e).parentNode;
	   Element.remove($('createdContent'));
	 
	   var myAjax = new Ajax.Request(
			  link.href,
			  {method: 'post', parameters: "", onComplete: this.processInfoS.bindAsEventListener(this)}
	   );
	 
	},
	
	// Example of creating your own functionality once lightboxS is initiated
	deactivate: function(){
		Element.remove($('createdContent'));
		
		if (browser == "Internet Explorer"){
			this.setScroll(0,this.yPos);
			this.prepareIE("auto", "auto");
			this.hideSelects("visible");
		}
		
		this.displayLightboxS("none");
	}
}

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

// Onload, make all links that need to trigger a lightboxS active
function initialize(){
	addLightboxSMarkup();
	lbox = document.getElementsByClassName('lbOnS');
	for(i = 0; i < lbox.length; i++) {
		valid = new lightboxS(lbox[i]);
	}
}

// Add in markup necessary to make this work. Basically two divs:
// Overlay holds the shadow
// LightboxS is the centered square that the content is put into.
function addLightboxSMarkup() {
	bod 				= document.getElementsByTagName('body')[0];
	
	var overlay = new Element('div', {
        'id': 'overlayS'
    });
	//overlay 			= document.createElement('div');
	//overlay.id		= 'overlayS';
	
	var lb = new Element('div', {
        'id': 'lightboxS',
        'class': 'loadingS'
    });
	//lb					= document.createElement('div');
	//lb.id				= 'lightboxS';
	//lb.className 	= 'loadingS';
	
	var imageDiv = new Element('div', {
        'id': 'image'
    });
	imageDiv.innerHTML	= '<img src="images/loading.gif">';

	//imageDiv 			= document.createElement('div');
	//imageDiv.id         = 'image';
	//imageDiv.innerHTML	= '<img src="images/loading.gif">';
	//lb.innerHTML	= '<div id="lbLoadMessage" class="overlay">' +
					     '<p>Loading</p>' +
						  '</div>';
	new Insertion.Top(bod, overlay);
	new Insertion.Top(bod, lb);				  
	new Insertion.Top(bod, imageDiv);
	/*bod.appendChild(imageDiv);
	bod.appendChild(lb);
	bod.appendChild(overlay);*/
	
}