/*
	AstraZeneca.com additional JS functions
*/

function addMasterScript(){
	//this adds in the master root.js file which includes all basic JS functionality
	//this must be included in all local js files 
	//Do not copy code from the root.js file, use this function to import it instead
	if(document.getElementById){
		//browser supports getElementById - attempt to add js functionality
		//this is a site-specific js file so include the master
		//create a script element
		if(document.createElement){
			var elRootScript=document.createElement('script');		
			if(elRootScript){
				//include master file
				elRootScript.src='/_mshost81109/system/styles/root/javascript/root.js';
				//elRootScript.src='../styles/root/javascript/root.js';
				elRootScript.type='text/javascript';
				//get a handle to this script file
				elHead=document.getElementsByTagName('head');
				if(elHead){
					//get script
					elExistingScript=document.getElementsByTagName('script');
					if(elExistingScript){
						//add into head before previous element
						elHead[0].insertBefore(elRootScript,elExistingScript[0]);
						//attachEvents function is called when the master file loads 
						//so global functionality is still enabled
					}
				}
			}
		}
	}
}	

//call the above function
addMasterScript();

//v1.7
// Flash Player Version Detection
// Detect Client Browser type
// Copyright 2005-2007 Adobe Systems Incorporated.  All rights reserved.

//adapted and stripped down 

var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;
	
function getVersion()
{
	var version;
	var axo;

	// NOTE : new ActiveXObject(strFoo) throws an exception if strFoo isn't in the registry

	try {
		// version will be set for 7.X or greater players
		axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
		version = axo.GetVariable("$version");
	} catch (e) {
		//very old version or not installed or not IE
		version=-1;
		
	}
	return version;
}


// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
function detectFlashVer(reqMajorVer, reqMinorVer, reqRevision){
	
	
	versionStr = getVersion();
		
	if (versionStr == -1 ) {
		return false;
	} else if (versionStr !== 0) {
		if(isIE && isWin && !isOpera) {
			// Given "WIN 2,0,0,11"
			tempArray         = versionStr.split(" "); 	// ["WIN", "2,0,0,11"]
			tempString        = tempArray[1];			// "2,0,0,11"
			versionArray      = tempString.split(",");	// ['2', '0', '0', '11']
		} else {
			versionArray      = versionStr.split(".");
		}
		var versionMajor      = versionArray[0];
		var versionMinor      = versionArray[1];
		var versionRevision   = versionArray[2];

        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
		if (versionMajor > parseFloat(reqMajorVer)) {
			return true;
		} else if (versionMajor == parseFloat(reqMajorVer)) {
			if (versionMinor > parseFloat(reqMinorVer))
				return true;
			else if (versionMinor == parseFloat(reqMinorVer)) {
				if (versionRevision >= parseFloat(reqRevision))
					return true;
			}
		}
		return false;
	}
}

function testFlash(){
	//only checks for IE
	if(isIE){
		if(!detectFlashVer(9,0,17)){
			//flash 9.0.16 or lower
			//detect Flash object, replace with HTML
			//when filename matches AZ_video_
			//config: detect this string
			var strToDetect='az_video';
			//config: replace flash move with this 
			var strFlash='Please upgrade to the latest version of Flash to see this video';
			if(document.createElement){
				var flashObjectsToReplace=document.getElementsByTagName('param');
				if(flashObjectsToReplace){
					var nodesArray=[];
					var flashObjectsToRemove=[];
					for(i=0;i<flashObjectsToReplace.length;i++){
						if(getAttributeCrossBrowser(flashObjectsToReplace[i],'name').toLowerCase()=='movie'){
							//create the replacement text
							var p=document.createElement('p');
							setAttributeCrossBrowser(p,'class','no_flash');
							var a=document.createElement('a');
							var img=document.createElement('img');
							setAttributeCrossBrowser(img,'src','/_mshost81109/system/styles/root/model/corporate/submodel/az_corporate/sites/astrazeneca_com/images/adobelink.gif');
							setAttributeCrossBrowser(img,'alt','Get Adobe Flash Player');
							a.href='http://get.adobe.com/flashplayer/';
							var linkText=document.createTextNode(strFlash);
							a.appendChild(linkText);
							a.appendChild(img);
							p.appendChild(a);
							//see if the value of this movie param contains the required string
							if(getAttributeCrossBrowser(flashObjectsToReplace[i],'value').toLowerCase().indexOf(strToDetect)!==-1){
								//replace flash object with paragraph
								//take a clone of original node
								nodesArray[i]=p.cloneNode(true);
								flashObjectsToReplace[i].parentNode.parentNode.insertBefore(nodesArray[i],flashObjectsToReplace[i].parentNode);
								//store object for later removal - removing now interferes with array of parameters we are traversing
								flashObjectsToRemove.push(flashObjectsToReplace[i].parentNode);
							}
						}
					}
					//finally, remove all the flash objects which show the affected movie
					for(i=0;i<flashObjectsToRemove.length;i++){
						flashObjectsToRemove[i].parentNode.removeChild(flashObjectsToRemove[i]);
					}	
				}
			}		
		}
	}
}

//Functions for Survey

//Create Cookie
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

//Check for Cookie
function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function addSurvey() {

	//Create a new Div containing an Iframe calling the survey
	var newDiv = document.createElement("div");
	var callForm = '<iframe id="survey" src="http://www.astrazeneca.com/survey/surveyform" frameborder="0" scrolling="no"/>';
	var newHTML = newDiv.innerHTML=callForm;

	var docBranch = document.getElementById('document_branch');
	var doc = document.getElementById('document');

	//Add the survey to the bottom of the contentholder div if document or document branch
	if ((docBranch) || (doc)) {
		var appendSurvey = document.getElementById('contentarea');
		appendSurvey.appendChild(newDiv); 
	}
}

function addPageURL() {
	//Add Current Page URL to hidden form field
	var hiddenField = document.getElementById('az_7__hidden_Page_URL');
	if (hiddenField) {
		hiddenField.value = window.parent.location.href;
	}
}

function resizeIframe () {
	var surveyIframe = parent.document.getElementById("survey");
	surveyIframe.className = 'iframesuccess';
}

function radioOther() {
	
	//Retrieve fieldsets for relevant radiobuttons
	var fieldSet1 = document.getElementById("fielddiv0").firstChild;
	var fieldSet2 = document.getElementById("fielddiv3").firstChild;	
	var fieldSet3 = document.getElementById("fielddiv5").firstChild;	

	//Depending on which fieldset of radios  is clicked call toggleOther
	//and pass through values of the button to toggle on and the field to show/hide
	fieldSet1.onclick = function () {
		var otherContainer = document.getElementById("az_1__Other_(please_state)");
		var radioOtherButton = document.getElementById("az_0__What_are_you_interested_in15");
		toggleOther(otherContainer, radioOtherButton);
	}
	fieldSet2.onclick = function () {
		var otherContainer = document.getElementById("az_4__None_of_the_above._I'm_a_...");
		var radioOtherButton = document.getElementById("az_3__Are_you_a...11");
		toggleOther(otherContainer, radioOtherButton);
	}
	fieldSet3.onclick = function () {
		var otherContainer = document.getElementById("az_6__Did_you_find_what_you_were_looking_for_textbox");
		var radioOtherButton = document.getElementById("az_5__Did_you_find_what_you_were_looking_for1");
		toggleOther(otherContainer, radioOtherButton);
	}   	
}  	

function toggleOther(otherContainer, radioOtherButton) {   	
	if(radioOtherButton.checked) {
         	toggleAttribute(otherContainer,'class','hidden','visible');
	} else {
         toggleAttribute(otherContainer,'class','visible','hidden');
		otherContainer.value = '';		
	}  	
}

function surveyCheck () {
	if (!readCookie('survey')) {
		// If no cookie, show the survey
		addSurvey();		
		// If form is submitted create a Cookie that will expire after 65 days	
		var surveyFormPage = document.getElementById("itemid6170816");
		//Make sure we only do this for the form on the Survey page
		if (surveyFormPage) {
			var surveyForm = document.getElementById("frm_feedback");
			if (surveyForm) {
				addPageURL();
				radioOther();
				surveyForm.onsubmit = function ()  {
					resizeIframe();
					createCookie('survey', 'survey', 65);  
				}
			}	
		}
	}
}
	
toCall=[];
toCall[0]=testFlash;
//toCall[1]=surveyCheck; Uncomment to add survey to documents again