/*


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 = "Um browser desconhecido";





	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');


		}


		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){


		$('overlay').style.display = display;


		$('lightbox').style.display = display;


		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){


		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).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'));
		


		if (browser == "Internet Explorer"){


			this.setScroll(0,this.yPos);


			this.prepareIE("auto", "auto");


			this.hideSelects("visible");


		}


		


		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 	= 'Carregando..';


	lb.innerHTML	= '<div id="lbLoadMessage">' +


						  '<p>Carregando..</p>' +


						  '</div>';


	bod.appendChild(overlay);


	bod.appendChild(lb);


}