var movie_viewer = new MovieViewer();

function MovieViewer()
{
	// Our elements.
	this.BACKGROUND_DIV 	= "overlayblackout";
	this.FOREGROUND_DIV 	= "popin";
	this.FLASH_DIV			= "popmovie";
	
	// Names of our superbanners at the top and bottom
	var BANNER_NAMES		= new Array("topsuperbanner", "bottomsuperbanner");
	
	// URL to fetch our text ads from
	var TEXT_AD_URL			= "http://3.adbrite.com/mb/text_group.php?sid=40759&br=1&dk=706572736f6e616c735f31";
	
	// Dimensions of the Heavy stuff
	var HEAVY_WIN_WIDTH		= 990;
	var HEAVY_WIN_HEIGHT	= 520;
	
	// This can only be set once.
	var activeuser_name = null;

	// Transitions go here.
	this.EFFECTS_IN = 0.05;
	this.EFFECTS_OUT = 0.15;

	var ourbody, pbackground;
	var movie_width, movie_height, window_min_width;
	var have_text_ad = false;
	var show_heavy = false;

	this.Launch = function(title, movie, width, height, min_width)
	{
		// First thing, let's see if we're doing the Heavy ad here or not
		if(document.getElementById("show_heavy"))
		{
			show_heavy = true;
		}
	
		// Insert our movie
		var flash_writer = new FlashWriter(movie, width, height);
		flash_writer.SetScriptAccess("never");
		
		if(activeuser_name != null)
		{
			flash_writer.SetParams("ng_username=" + activeuser_name);
		}
		
		GetElement(movie_viewer.FLASH_DIV).innerHTML = flash_writer.ToString();

		// Let's scrap the super banners.
		ToggleBanners("hidden");

		// Get our values for repetitive use.
		movie_width = width;
		movie_height = height;
		window_min_width = min_width;

		// Set up our background and append it to the body.
		ourbody = document.getElementsByTagName("body").item(0);
		pbackground = document.createElement("div");

		if(!(IsFirefoxMac()))
		{
			pbackground.setAttribute("id", movie_viewer.BACKGROUND_DIV);
		}
		else
		{
			// Mac Firefox can't handle opacity stuff, so let's do a workaround.
			movie_viewer.BACKGROUND_DIV = "overlayblackout_ffmac";
			pbackground.setAttribute("id", movie_viewer.BACKGROUND_DIV);
			pbackground.style.backgroundImage = "url(http://img.ngfiles.com/blackbox.png)";
			pbackground.style.backgroundRepeat = "repeat";
		}

		pbackground.style.display = 'none';
		ourbody.appendChild(pbackground);

		// Insert our player ad
		if(show_heavy)
		{
			Husky.start("huskyad");
		}
		else if(!(have_text_ad))
		{
			InsertTextAd();
			have_text_ad = true;
		}

		// Position stuff before we start displaying things
		this.CalibrateMoviePos();

		// Add an event handler for when the user resizes/scrolls the page
		SetEventHandler("resize", this.CalibrateMoviePos);
		SetEventHandler("scroll", this.CalibrateMoviePos);

		ToggleSelects("hidden");
		GetElement(movie_viewer.BACKGROUND_DIV).style.display = "block";

		// Set the title text.
		GetElement("popmovietitle").innerHTML = "<span class=\"shortpres\">Negócio InMobiliário</span> " + title;

		if(!(IsFirefoxMac()))
		{
			new Effect.Appear(GetPopup());
		}
		else
		{
			// Firefox/Mac can't handle fading in Flash
			GetPopup().style.display = "block";
		}
	}

	this.CalibrateMoviePos = function()
	{
		// Let's set up the positioning of the background and the container,
		// prior to doing anything else.
		var popup_element = GetPopup();
		popup_element.style.width = (show_heavy ? HEAVY_WIN_WIDTH : (Math.max(movie_width, window_min_width) + 20)) + "px";

		// This needs to be set, for centering purposes.
		GetElement(movie_viewer.FLASH_DIV).style.width = movie_width + "px";

		var background_element = GetElement(movie_viewer.BACKGROUND_DIV);
		background_element.style.top = 0 + "px";
		background_element.style.left = 0 + "px";
		background_element.style.width = ScrollDimensionsInfo()[0] + "px";
		background_element.style.height = ScrollDimensionsInfo()[1] + "px";
		background_element.style.zIndex = 20;

		var popup_height;
		var popup_width;
		
		if(!(show_heavy))
		{
			// Little trick to get the dimensions of a possibly hidden element
			var element_hidden = (popup_element.style.display == "none");
	
			popup_element.style.visibility = "hidden";
			popup_element.style.display = "block";
			popup_height = popup_element.clientHeight;
			popup_width = popup_element.clientWidth;
	
			if(element_hidden)
			{
				popup_element.style.display = "none";
			}
			popup_element.style.visibility = "visible";
		}
		else
		{
			popup_height = HEAVY_WIN_HEIGHT;
			popup_width = HEAVY_WIN_WIDTH;
		}

		// Now calculate our location based on scrolling and window size
		var top = Round((InnerDimensionsInfo()[1] - popup_height) / 2);
		if(top < 0)
		{
			top = 0;
		}
		top += GetPageScrolledPosition()[1];

		var left = Round((InnerDimensionsInfo()[0] - popup_width) / 2);
		if(left < 0)
		{
			left = 0;
		}
		left += GetPageScrolledPosition()[0];

		popup_element.style.top = top + "px";
		popup_element.style.left = left + "px";
		popup_element.zIndex = 99;
		
		if(show_heavy)
		{
			// Beware the hard-coded stuff here.
			var player_element = document.getElementById("player-wrap");
			top = Round((HEAVY_WIN_HEIGHT - (movie_height + 50)) / 2);
			if(top < 0)
			{
				top = 0;
			}
			
			player_element.style.top = top + "px";
			player_element.style.left = "217px";		// 217 instead of 220... WTF?
		}
	}

	this.Cancel = function()
	{
		// We have to scrap the flash from inside of the div.
		GetElement(movie_viewer.FLASH_DIV).innerHTML = "&nbsp;";
		
		if(show_heavy)
		{
			Husky.stop();
		}

		// Bring our ads back.
		ToggleBanners("visible");

		// Let's get rid of that event listener
		RemoveEventHandler("resize", this.CalibrateMoviePos);
		RemoveEventHandler("scroll", this.CalibrateMoviePos);

		// Get rid of our movie.
		GetElement(movie_viewer.BACKGROUND_DIV).style.display = "none";
		GetPopup().style.display = "none";

		// Show the select boxes again.
		ToggleSelects("visible");
	}
	
	this.SetActiveUser = function(name)
	{
		if(activeuser_name == null)
		{
			activeuser_name = name;
		}
	}

	function GetElement(id)
	{
		return(document.getElementById(id));
	}

	function GetPopup()
	{
		return(GetElement(movie_viewer.FOREGROUND_DIV));
	}

	// Browser related functions.
	function InnerDimensionsInfo()
	{
		var dimensions = new Array(2);
		
		if(document.documentElement && document.documentElement.clientWidth)
		{
			dimensions[0] = document.documentElement.clientWidth;
			dimensions[1] = document.documentElement.clientHeight;
		} else
		if(self.innerWidth)
		{
			dimensions[0] = self.innerWidth;
			dimensions[1] = self.innerHeight;
		} else
		if(document.body)
		{
			dimensions[0] = document.body.clientWidth;
			dimensions[1] = document.body.clientHeight;
		}

		return(dimensions);
	}

	function ScrollDimensionsInfo()
	{
		var dimensions = new Array(2);

		if(window.innerHeight && window.scrollMaxY)
		{
			dimensions[0] = document.body.scrollWidth;
			dimensions[1] = window.innerHeight + window.scrollMaxY;
		} else
		if(document.body.scrollHeight > document.body.offsetHeight)
		{
			dimensions[0] = document.body.scrollWidth;
			dimensions[1] = document.body.scrollHeight;
		} else
		{
			dimensions[0] = document.body.offsetWidth;
			dimensions[1] = document.body.offsetHeight;
		}

		return(dimensions);
	}

	function GetPageScrolledPosition()
	{
		var dimensions = new Array(2);

		if(self.pageYOffset)
		{
			dimensions[0] = self.pageXOffset;
			dimensions[1] = self.pageYOffset;
		}
		else if((document.documentElement) && (document.documentElement.scrollTop))
		{
			dimensions[0] = document.documentElement.scrollLeft;
			dimensions[1] = document.documentElement.scrollTop;
		}
		else if(document.body)
		{
			dimensions[0] = document.body.scrollLeft;
			dimensions[1] = document.body.scrollTop;
		}

		return(dimensions);
	}
	
	function ToggleSelects(state)
	{
		var selects = document.getElementsByTagName("select");
		for(var i = 0; i != selects.length; i++)
		{
			selects[i].style.visibility = state;
		}
	}
	
	function ToggleBanners(state)
	{
		var banner;
		for(var i=0; i<BANNER_NAMES.length; i++)
		{
			banner = GetElement(BANNER_NAMES[i]);
			if(banner)
			{
				banner.style.visibility = state;
			}
		}
	}

	function SetEventHandler(eventname, handler)
	{
		if(window.addEventListener)
		{
			window.addEventListener(eventname, handler, false);
		}
		else if(window.attachEvent)
		{
			window.attachEvent("on" + eventname, handler);
		}
	}

	function RemoveEventHandler(eventname, handler)
	{
		if(window.removeEventListener)
		{
			window.removeEventListener(eventname, handler, false);
		}
		else if(window.detachEvent)
		{
			window.detachEvent("on" + eventname, handler);
		}
	}

	// Necessary for an ugly hack - FF/Mac can't handle Flash combined with CSS opacity
	function IsFirefoxMac()
	{
		var userAgent = navigator.userAgent.toLowerCase();
  		return((userAgent.indexOf('mac') != -1) && (userAgent.indexOf('firefox') != -1));
	}

	function InsertTextAd()
	{
		// Thanks to http://www.mikeonads.com/category/ad-networks/ for this!
		// It captures the document.write()s from the ad and inserts them properly.
		// First we override document.write()
		(function(){

			function SetAd(ad)
			{
				GetElement("popin_ad").innerHTML = ad;
			}

			if( typeof( Document)!='undefined' && typeof( HTMLDocument)!='undefined' ){
				// Gecko, Firefox, Opera
				HTMLDocument.prototype.write = function(s){
					SetAd(s);
					document.close();
				};
			}else if(document.uniqueID && document.expando){
				// Internet Explorer
				document.write = function(s){
					 SetAd(s);
					 document.close();
				}
			}else if(document.constructor){
				// Safari
				document.write  = function(s){
					SetAd(s);
				};
			}
		})();

		// Now insert the script stuff, and let the above code handle the output
		var script_element = document.createElement("script");
		script_element.setAttribute("type", "text/javascript");
		script_element.setAttribute("src", TEXT_AD_URL);
		var ad_container = GetElement("popin_ad");

		// This seems weird, but Opera needs it this way.
		ad_container.appendChild(script_element);
		ad_container.removeChild(ad_container.firstChild);
	}
}