function initialiseMenu() {



   // Second tier nav object which was last opened

   lastExpandedObject =null;

   // Third tier nav objects which were last opened

   lastFlyoutObject = null;

   flyOutNavsDisplayed=null;

   lastFlyoutBridgeObject = null;





   netscapeBrowser = (navigator.appName == "Netscape");

   // Initialise x and y co-ordinate values for user's mouse

   xPosition = 0;

   yPosition = 0;

   if (netscapeBrowser) {

      document.captureEvents(Event.MOUSEMOVE);

   }

   document.onmousemove = getMouseCoordinates;

   if (netscapeBrowser) {

      document.captureEvents(Event.MOUSEDOWN);

   }

   document.onmousedown = listenForMouseClick;

   // If a fly out navigation block is partially off the bottom of the browser window store the difference

   difference = 0;

   thirdTierDisplayed = new Array();

   // Initialise array object used to store whether the IFRAME DIV element has been added to a fly out block

   thirdTierIframeAdded = new Array();

   milliseconds = 800;

   flyOutNavsDisplayed = false;

   lastHeight = new Array();

   lastWindowHeight = new Array();

   lastScrolledHeight = new Array();

   // Which second tier block needs to be expanded when the page is loaded

   if (getCookieValue("siteStoreExpandableState")) {

      idStoredInCookie = getCookieValue("siteStoreExpandableState");

      if(document.getElementById(idStoredInCookie))  {

       lastExpandedObject=document.getElementById(idStoredInCookie);

       lastExpandedObject.style.display = "block";

      }

   }

  if (getCookieValue('Basket')) {

   document.getElementById('AA5_second_tier').style.display = "block";

  }

}







function getMouseCoordinates(e) {

   if (navigator.appName.match("Netscape")) {

      xPosition = e.pageX;

      yPosition = e.pageY;

   } else {

      xPosition = event.clientX;

      yPosition = event.clientY;

   }

}



function listenForMouseClick(e)  {

   if (!e) {

      if( window.event ) {

         // DOM

         e = window.event;

      } else {

         // Cannot reference event

         return;

      }

   }

   if (e.target) {

      targetElement = e.target;

   }

   if (e.srcElement) {

      targetElement = e.srcElement;

   }

   if(typeof(e.which) == 'number') {

      // Netscape

      e = e.which;

   } else {

      if(typeof(e.button) == 'number') {

         // DOM

         e = e.button;

      } else {

         // Cannot determine

         return;

      }

   }

   // Check first mouse button is clicked

   if (e == 1) {

     if (xPosition == null && !(isNaN(xPosition))) { xPosition = 176; }

      if (xPosition <= 175 && !flyOutNavsDisplayed ) 

      {

       if ( targetElement != null && targetElement.parentNode.parentNode.id.match("/_second_tier/g")) 

            writeSessionCookie('siteStoreExpandableState',lastExpandedObject.id);

        else

           writeSessionCookie('siteStoreExpandableState','');

      } else {

         if (flyOutNavsDisplayed) {

             writeSessionCookie('siteStoreExpandableState',

                                  lastFlyoutObject.parentNode.parentNode.id);

         }

      }  

           

   }

}







function writeSessionCookie (cookieName, cookieValue) {

  if (testSessionCookie()) {

      document.cookie = escape(cookieName) + "=" + escape(cookieValue) + "; path=/thconline.cgi";

      return true;

   } else {

      return false;

   }

}



function deleteCookie (cookieName )

{

  var cookie_date = new Date ( );  // current date & time

  cookie_date.setTime ( cookie_date.getTime() - 1 );

  document.cookie = cookieName += "=; expires=" + cookie_date.toGMTString();

}



function getCookieValue (cookieName) {

   var exp = new RegExp (escape(cookieName) + "=([^;]+)");

   if (exp.test (document.cookie + ";")) {

      exp.exec (document.cookie + ";");

      return unescape(RegExp.$1);

   } else {

      return false;

   }

}



function testSessionCookie () {

   document.cookie ="testSessionCookie=Enabled";

   if (getCookieValue("testSessionCookie")=="Enabled") {

      return true;

   } else {

      return false;

   }

}



function showNavs(navObject) {



   var secondTierObject = null;

   var secondTierName = navObject.id + "_second_tier";

   if (document.getElementById(secondTierName)) {

      secondTierObject = document.getElementById(secondTierName);

      var navArrowName = navObject.id + "_arrow";

      var navArrowObject = document.getElementById(navArrowName);

   }

   if (lastExpandedObject != null && secondTierObject != lastExpandedObject) {

      // Collapse previously expanded second tier block if still visible

      lastExpandedObject.style.display = "none";

      var lastExpandedObjectArrowName = lastExpandedObject.id;

      lastExpandedObjectArrowName = lastExpandedObjectArrowName.substr(0,lastExpandedObjectArrowName.length - 12) + "_arrow";

      if (document.getElementById(lastExpandedObjectArrowName)) {

         var lastExpandedObjectArrow = document.getElementById(lastExpandedObjectArrowName);

         lastExpandedObjectArrow.className = "arrowUp";

      }

   }

   if (lastFlyoutObject != null) {

      // Previously opened third tier flyout block must dispappear

      lastFlyoutObject.style.display = "none";

   }

   if (secondTierObject != null) {

      // Determine whether to expand or collapse second tier block

      if (secondTierObject.style.display == "none") {

         secondTierObject.style.display = "block";

         if (navArrowObject)

            navArrowObject.className = "arrowDown";

        lastExpandedObject = secondTierObject;

      } else {

         secondTierObject.style.display = "none";

         if (navArrowObject) 

            navArrowObject.className = "arrowDown";

      }

      lastExpandedObject = secondTierObject;

   }



}





function showAmen(navObject) {



   var secondTierObject = null;

   var secondTierName = navObject.id + "_second_tier";

   if (document.getElementById(secondTierName)) {

      secondTierObject = document.getElementById(secondTierName);

      var navArrowName = navObject.id + "_arrow";

      var navArrowObject = document.getElementById(navArrowName);

   }



   if (lastFlyoutObject != null) {

      // Previously opened third tier flyout block must disappear

      lastFlyoutObject.style.display = "none";

   }

   if (secondTierObject != null) {

      // Determine whether to expand or collapse second tier block

      if (secondTierObject.style.display == "none") {

         secondTierObject.style.display = "block";

         if (navArrowObject) {

            navArrowObject.className = "arrowDown";

         }

      } else {

         secondTierObject.style.display = "none";

         if (navArrowObject) {

            navArrowObject.className = "arrowDown";

         }

      }

   }



}







function MoveNav(navObjectId,x)

{

 var  thirdTierObject2 = document.getElementById(navObjectId);

 if (x < 175)

{

  x++;

  x++;

  x++;

  x++;

  thirdTierObject2.style.left=x+'px';

    eval("setTimeout('MoveNav(\""+navObjectId+"\", \""+x+"\")',"+1+")");

}

}



function flyoutNavs(navObject,displayNavs) {

   var thirdTierObject = null;

   var thirdTierName = navObject.id + "_third_tier";

   var thirdTierBridge = navObject.id + "_bridge";

   thirdTierDisplayed[navObject.id] = displayNavs;

   flyOutNavsDisplayed = true;//displayNavs;

   if (document.getElementById(thirdTierName)) {

      thirdTierObject = document.getElementById(thirdTierName);

      thirdTierBridgeObject = document.getElementById(thirdTierBridge);

   }

   if (thirdTierObject != null) {

      if (displayNavs == 1) {

         if (lastFlyoutObject != null && lastFlyoutObject != thirdTierObject) {

            lastFlyoutObject.style.display = "none";

            lastFlyoutObject.style.marginTop = "-15px";

            if (lastFlyoutBridgeObject != null) {

               lastFlyoutBridgeObject.style.display = "none";

            }

            difference = 0;

         }

        thirdTierObject.omouseover= "";

       if(thirdTierObject.style.display !="block")

       {

           thirdTierObject.onmouseout= "";

         thirdTierObject.style.display = "block";

         

          eval("setTimeout('MoveNav(\""+thirdTierName+"\", 100)',"+1+")");

       }

       thirdTierObject.onmouseover= "flyoutNavs(this,1)";

       thirdTierObject.onmouseout= "flyoutNavs(this,0)";



         thirdTierObject.style.zIndex = "10";

       //  thirdTierBridgeObject.style.display = "block";

       //  thirdTierBridgeObject.style.left = "147px";

       //  thirdTierBridgeObject.style.marginTop = "-18px";

      //   thirdTierBridgeObject.style.zIndex = "11";



         if (difference == 0 && xPosition <= 150) {

            var browserWindowHeight = getWindowHeight();

            var scrolledHeight = getScrollHeight();

            var numberOfElements = getNumberOfElements(thirdTierObject);

            // Third tier link height is 20 pixels

            var flyOutNavsHeight = eval(numberOfElements * 20);

            if ((thirdTierIframeAdded[navObject.id] == null || !(thirdTierIframeAdded[navObject.id])) && !(netscapeBrowser) && !(isNaN(flyOutNavsHeight))) {

               backgroundWithIframe = '<div style="position: absolute; top: -3px;">'

                                    + '</div>';

               thirdTierObject.innerHTML = backgroundWithIframe + thirdTierObject.innerHTML;

               thirdTierIframeAdded[navObject.id] = true;

            }

            difference = eval(yPosition + flyOutNavsHeight + 5 - browserWindowHeight);

            if (netscapeBrowser) {

               difference -= scrolledHeight;

            }

            // If browser window height and scrolled height values are unchanged then use the previous height difference value

            if (lastWindowHeight[thirdTierName] != null && lastScrolledHeight[thirdTierName] != null) {

               if (lastWindowHeight[thirdTierName] == browserWindowHeight && lastScrolledHeight[thirdTierName] == scrolledHeight) {

                  difference = lastHeight[thirdTierName];

               }

            }

            // Remember the current height difference, browser window height and scrolled height values

            lastHeight[thirdTierName] = difference;

            lastWindowHeight[thirdTierName] = browserWindowHeight;

            lastScrolledHeight[thirdTierName] = scrolledHeight;

            // Only move the third tier fly out block if part of the links are cut off

            if (difference > 0) {

               // Make sure the bridge object locks at the bottom of the fly out block

               var offsetAmount = 0;

               if ((15 + difference) > flyOutNavsHeight) {

                  offsetAmount = eval((15 + difference) - flyOutNavsHeight) ;

               }

               thirdTierObject.style.marginTop = eval(offsetAmount - 15 - difference)+"px";

            } else {

               thirdTierObject.style.marginTop = "-15px";

            }

         }



      } else {

         eval("setTimeout('hideObject(\""+navObject.id+"\")',"+milliseconds+")");

      }

   }

   lastFlyoutObject = thirdTierObject;

   lastFlyoutBridgeObject = thirdTierBridgeObject;

}



function hideObject(navObjectID) {

   var thirdTierName = navObjectID + "_third_tier";

   var thirdTierBridge = navObjectID + "_bridge";

   if (document.getElementById(thirdTierName)) {

      thirdTierObject = document.getElementById(thirdTierName);

      thirdTierBridgeObject = document.getElementById(thirdTierBridge);

      // If cursor is still off third tier block and its parent nav after the delay then make it disappear

      if (thirdTierDisplayed[navObjectID] == 0) {

         thirdTierObject.style.display = "none";

      //   thirdTierBridgeObject.style.display = "none";

         difference = 0;

      }

   }

 flyOutNavsDisplayed = false;

}



function getNumberOfElements(nodeObject) {

   var countElements = 0;

   var children = nodeObject.childNodes;

   for(var i=0; i < children.length; i++) {

      if (children[i].className != null && children[i].className == "navLeftThird") {

         countElements++;

      }

      // Recursively call this function

      countElements += getNumberOfElements(children[i]);

   }



   return countElements;

}





function getWindowHeight() {

   var browserWinWidth = 0, browserWinHeight = 0;

   if( typeof( window.innerWidth ) == 'number' ) {

      // Non-IE

      browserWinWidth = window.innerWidth;

      browserWinHeight = window.innerHeight;

   } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {

      // IE 6+

      browserWinWidth = document.documentElement.clientWidth;

      browserWinHeight = document.documentElement.clientHeight;

   } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {

      // IE 4 

      browserWinWidth = document.body.clientWidth;

      browserWinHeight = document.body.clientHeight;

   }

   return browserWinHeight;

}



function getScrollHeight() {

   var scrolledWidth = 0, scrolledHeight = 0;

   if ( typeof( window.pageYOffset ) == 'number' ) {

      // Netscape

      scrolledHeight = window.pageYOffset;

      scrolledWidth = window.pageXOffset;

  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {

      // DOM

      scrolledHeight = document.body.scrollTop;

      scrolledWidth = document.body.scrollLeft;

  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {

      // IE6

      scrolledHeight = document.documentElement.scrollTop;

      scrolledWidth = document.documentElement.scrollLeft;

  }

  return scrolledHeight;

}







initialiseMenu();