/*
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,

	// This function changed from original per comments at: http://particletree.com/features/lightbox-gone-wild/
	// To allow for calling lightbox directly from javascript
	initialize: function(ctrl) {
		if ( ctrl != null ) { this.content = ctrl.href;
		Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false);
		ctrl.onclick = function(){ $('lightbox').className = "loading"; return false;}; }
	},	
	
	// Turn everything on - mainly the IE fixes
	activate: function(thisWidth, thisHeight){
		// 2009-09-06 BP Updated script so that it always acts as if browser is IE, regardless of browser.
		//		Needed to do this so that if overlay extends beyond lenghth of page, user can scroll the
		//		overlay.  This is applicable mainly to the registration script.
		
		//if (browser == 'Internet Explorer'){
			this.getScroll();
			this.prepareIE('100%', 'hidden');
			this.setScroll(0,0);
			this.hideSelects('hidden');
		//}
		this.displayLightbox("block");
		
        // stretch overlay to fill page and fade in		

		$('lightbox').style.width = thisWidth+'px'; 
		$('lightbox').style.height = thisHeight+'px'; 
		$('lightbox').style.marginLeft = '-' + (thisWidth/2) + 'px';
		$('lightbox').style.marginTop = '-' + ((thisHeight/2)) + 'px';	
		
	},
	
	// 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;
		}
		
		if (self.pageXOffset) { 
			this.xPos = self.pageXOffset; 
		} else if (document.documentElement && document.documentElement.scrollLeft){ 
			this.xPos = document.documentElement.scrollLeft; 
		} else if (document.body) { 
			this.xPos = document.body.scrollLeft; 
		} 		
	},
	
	setScroll: function(x, y){
		window.scrollTo(x, y); 
	},
	
	displayLightbox: function(display){
		var arrayPageSize = this.getPageSize();
		
		$('overlay').style.display = display;	
        $('overlay').setStyle({ width: arrayPageSize[0] + 'px', height: arrayPageSize[1] + 'px' });				
		
		$('lightbox').style.display = display;
		if(display != 'none') this.loadInfo();
	},
	
	// Begin Ajax request based off of the href of the clicked linked
	loadInfo: function() {
		
		var bindArgs = {
		method: 'post',	
		onFailure: function(){
			alert('Zoom Overlay could not be loaded.');
		},
		onSuccess: function(t){
			info = "<div id='lbContent'>" + t.responseText + "</div>";
			new Insertion.Before($('lbLoadMessage'), info)
			$('lightbox').className = "done";	
			this.actions();		
		}
		};
		
		var myAjax = new Ajax.Request(this.content, bindArgs);	
		
		//var myAjax = new Ajax.Request(this.content, bindArgs);	
		
		//var myAjax = new Ajax.Request(
        //this.content,
        //{method: 'post', evalScripts: true, 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();
		//initiateOverlayMaps();
	//},
	
	// 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;
	   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'));
		
		// 2009-09-06 BP Updated script so that it always acts as if browser is IE, regardless of browser.
		//		Needed to do this so that if overlay extends beyond lenghth of page, user can scroll the
		//		overlay.  This is applicable mainly to the registration script.
		
		//if (browser == 'Internet Explorer'){
			//alert('ie7 scrolling back');
			//alert('xpos: ' + xPos);
			//alert('ypos: ' + yPos);
			
			this.setScroll(this.xPos,this.yPos);
			this.prepareIE("auto", "auto");
			this.hideSelects("visible");
		//}
		
		this.displayLightbox("none");
	},
	
    getPageSize: function(){
	        
	     var xScroll, yScroll;
		
		if (window.innerHeight && window.scrollMaxY) {	
			xScroll = window.innerWidth + window.scrollMaxX;
			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
			if(document.documentElement.clientWidth){
				windowWidth = document.documentElement.clientWidth; 
			} else {
				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 = xScroll;		
		} else {
			pageWidth = windowWidth;
		}

		return [pageWidth,pageHeight];
	}	
}

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

// 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">' +
						  '<div style="text-align: center; padding-top: 70px;"><img src="/property-search/res/includes/scriptaculous/spinner.gif" alt="Loading" border="0" align="absmiddle" />&nbsp;Loading....</div>' +
						  '</div>';
	bod.appendChild(overlay);
	bod.appendChild(lb);
}

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

// Custom functions pulled from comments at:  http://particletree.com/features/lightbox-gone-wild/
// These allow lightbox to be called directly from javascript
var popup;

function onClickLightbox(url, popWidth, popHeight) {
    popup = new lightbox(null); 
    popup.content = url; 
    popup.activate(popWidth, popHeight);
}

function closeLightbox() {
		//if (browser == "Internet Explorer"){
			//alert('ie7 scrolling back');
			//alert('xpos: ' + xPos);
			//alert('ypos: ' + yPos);
			
			//this.setScroll(this.xPos,this.yPos);
			//this.prepareIE("auto", "auto");
			//this.hideSelects("visible");
		//}	
		
		//Element.remove($('lbContent'));
        //$('overlay').style.display = 'none';
        //$('lightbox').style.display = 'none';
		popup.deactivate()
}

function detectMacXFF() {
  var userAgent = navigator.userAgent.toLowerCase();
  if (userAgent.indexOf('mac') != -1 && userAgent.indexOf('firefox')!=-1) {
    return true;
  }
}