//flash disabling /enabling script 
// used with swfObject flash ebedding script 
//author: Sakari Laaksonen, Naviatech / Satama Interactive
// Requires changes in the implementation routine of swfobject scripts.
//each new swbobject must be conditionalised according to noflashObj.noflash attribute


//OBJECT CONSTRUCTOR

function flashTogglerObj(css) {

//parameters: default value for showing flash: 0 = show flas, 1 = don't show
//css defines the path to the stylesheet that contains styles for enable/disable button
//if css is not false | 0 | null, it will add a <link> tag that will import the stylesheet defined by 'css'
//see set_button_style() for details

//attributes / vars

this.defaultVal = '0';
this.noflash;
this.cookieName = 'viewNokiaFlash';

// methods / functions
this.SetCookie = create_cookie; 
this.ReadCookie = read_cookie;
this.ToggleFlash = toggle_flash;
this.SetButton = set_button;
this.SetButtonStyle = set_button_style;

//run inner functions
//if cookie is not found, make it. 
this.noflash = this.ReadCookie(this.cookieName);
if (this.noflash === null) {

  this.SetCookie(this.cookieName, this.defaultVal);
  this.noflash = this.ReadCookie();
}


// import button styles if css path is given
if(css) {this.SetButtonStyle(css);}
//Make the toggler button
this.SetButton();

}

//INNER FUNCTIONS

//cookie functions from  Nokia survey scripts
function create_cookie(name, value, days) {
 if(days) {
    var date = new Date();
    var expirationTime = 24*60*60*1000*180;  
    date.setTime(date.getTime() + expirationTime) //(days*60*60*1000)); *24*60*60*1000
    var expires = "; expires="+date.toGMTString();
 } else {
    expires = "";
 }
 document.cookie = name+"="+value+expires+"; path=/";
 //alert(document.cookie);

}

function read_cookie(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 set_button_style(css) {
//if css path is set, import the given css  

  var headNode = document.getElementsByTagName('head')[0];
  
   if(IE()) {
  //IE does not properly support createElement & setAttribute functions
   var linkTag = '<link href="'+css+'" rel="stylesheet" type="text/css"/>';
   linkNode = document.createElement(linkTag);
   } 
   else {
   var linkNode = document.createElement('link');
   linkNode.setAttribute('href',css);
   linkNode.setAttribute('rel' , 'stylesheet');
   linkNode.setAttribute('type','text/css');
   
   }
  headNode.appendChild(linkNode);
  return;
  }
  

  function toggle_flash() {
  //if cookie value = '0', set it to '1' and vice versa
     this.noflash !== '1' ? this.SetCookie(this.cookieName,'1') : this.SetCookie(this.cookieName,'0');
    
    //reload the page    
     window.location.reload();
  }
  

  function set_button() {

    var text = '';
    this.noflash !== '1' ? text = 'ปิดการใช้งานแฟลช' : text = 'เปิดการใช้งานแฟลช';
    //place the button inside  <div id="flashbuttoncontainer" />
    document.getElementById('flashbuttoncontainer').innerHTML = '<span id="flashbutton" onclick="FlashToggler.ToggleFlash();">'+text+'</span>';
     
  }


function IE() {
var browser = navigator.appName;
//var version = navigator.appVersion;
return browser == "Microsoft Internet Explorer" //? r = true: r = false;
//return r;
}
// JavaScript Document