/*
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,

    initialize: function(ctrl) {
        this.content = ctrl.rel;

        if (this.content == "confirm") {
            this.content = "/confirm.htm"
        }
        var full_url = "" + ctrl.href + "";
        var ext_url = full_url.split("=");
        var GATag = "";
        var pageTag;
        
        this.targetURL = ext_url[1].split("*")[0];
        if (ext_url.length > 3) {
            this.lb_type = ('undefined' == typeof (ext_url[2]) ? '1' : ext_url[2].split("&")[0]);
            {
                var sPath = window.location.pathname;
                var sPage = sPath.substring(sPath.lastIndexOf('/') + 1);

                if (sPage == 'caprie-trial.aspx') {
                    GATag = ext_url[3];
                    pageTag = ((ext_url[1] + "=" + ext_url[2]).split("*"))[0];

                }

                else if (sPage == 'cure-trial.aspx') {
                    GATag = ext_url[5];
                    pageTag = ((ext_url[1] + "=" + ext_url[2] + "=" + ext_url[3] + "=" + ext_url[4]).split("*"))[0];
                }

                else if (sPage == 'commit-trial.aspx') {
                    GATag = ext_url[6];
                    pageTag = ((ext_url[1] + "=" + ext_url[2] + "=" + ext_url[3] + "=" + ext_url[4] + "=" + ext_url[5]).split("*"))[0];
                }

                else if (sPage == 'clarity-trial.aspx') {
                    GATag = ext_url[6];
                    pageTag = ((ext_url[1] + "=" + ext_url[2] + "=" + ext_url[3] + "=" + ext_url[4] + "=" + ext_url[5]).split("*"))[0];
                }

            }




        }
        else {
            this.lb_type = ('undefined' == typeof (ext_url[2]) ? '1' : ext_url[2]);
        }

        Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false);
        ctrl.onclick = function() {
            //pageLink = ext_url[1].split("*")[0];
        pageLink = pageTag;
            if (GATag != "") { pageTracker._trackPageview(unescape(GATag)); }
            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: 'get', 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();
        //setTimeout("document.location.href = pageLink",1500);	
    },

    // Search through new links within the lightbox, and attach click event
    actions: function() {
        //this.url = "shut up!";
        lbActions = document.getElementsByClassName('lbAction');
        //alert('test: ' + this.pageLink);
        for (i = 0; i < lbActions.length; i++) {
            //alert(pageLink);
            //below links up either gotoURL or deactivate even based on value in rel of the lblAction control
            Event.observe(lbActions[i], 'click', this[lbActions[i].rel].bindAsEventListener(this), false);
            lbActions[i].onclick = function() { return false; };
        }

    },


    gotoURL: function() {
        //alert(this.message);



        if (typeof pageTracker._trackPageview == 'function') {
            pageTracker._trackPageview('/hcp/Outgoing/interstitial-Continue/' + pageLink)
        }
        window.open(pageLink)
        Element.remove($('lbContent'));

        if (browser == "Internet Explorer") {
            this.setScroll(0, this.yPos);
            this.prepareIE("auto", "auto");
            this.hideSelects("visible");
        }

        this.displayLightbox("none");
    },

    // Deactivate Lightbox
    deactivate: function() {
        if (typeof pageTracker._trackPageview == 'function') {
            pageTracker._trackPageview('/hcp/Outgoing/interstitial-Go_Back/' + pageLink)
        }
        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('confirmScript');
    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>#</p>' +
						  '</div>';
	bod.appendChild(overlay);
	bod.appendChild(lb);
	
}