var isDOM = (document.getElementById ? true : false); 
   var isIE4 = ((document.all && !isDOM) ? true : false);
   var isNS4 = (document.layers ? true : false);
   function getRef(id) {
   if (isDOM) return document.getElementById(id);
   if (isIE4) return document.all[id];
   if (isNS4) return document.layers[id];
   }
   function getSty(id) {
   return (isNS4 ? getRef(id) : getRef(id).style);
   } 
   // Hide timeout.
   var popTimer = 0;
   // Array showing highlighted menu items.
   var litNow = new Array();
   function popOver(menuNum, itemNum) {
   clearTimeout(popTimer);
   hideAllBut(menuNum);
   litNow = getTree(menuNum, itemNum);
   changeCol(litNow, true);
   targetNum = menu[menuNum][itemNum].target;
   if (targetNum > 0) {
   thisX = parseInt(menu[menuNum][0].ref.left) + parseInt(menu[menuNum][itemNum].ref.left);
   thisY = parseInt(menu[menuNum][0].ref.top) + parseInt(menu[menuNum][itemNum].ref.top);
   with (menu[targetNum][0].ref) {
   left = parseInt(thisX + menu[targetNum][0].x);
   top = parseInt(thisY + menu[targetNum][0].y);
   visibility = 'visible';
         }
      }
   }
   function popOut(menuNum, itemNum) {
   if ((menuNum == 0) && !menu[menuNum][itemNum].target)
   hideAllBut(0)
   else
   popTimer = setTimeout('hideAllBut(0)', 500);
   }
   function getTree(menuNum, itemNum) {
   
   // Array index is the menu number. The contents are null (if that menu is not a parent)
   // or the item number in that menu that is an ancestor (to light it up).
   itemArray = new Array(menu.length);
   
   while(1) {
   itemArray[menuNum] = itemNum;
   // If we've reached the top of the hierarchy, return.
   if (menuNum == 0) return itemArray;
   itemNum = menu[menuNum][0].parentItem;
   menuNum = menu[menuNum][0].parentMenu;
      }
   }
   
   // Pass an array and a boolean to specify colour change, true = over colour.
   function changeCol(changeArray, isOver) {
   for (menuCount = 0; menuCount < changeArray.length; menuCount++) {
   if (changeArray[menuCount]) {
   newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol;
   // Change the colours of the div/layer background.
   with (menu[menuCount][changeArray[menuCount]].ref) {
   //if (isNS4) bgColor = newCol;
    backgroundColor = newCol;
            }
         }
      }
   }
   function hideAllBut(menuNum) {
   var keepMenus = getTree(menuNum, 1);
   for (count = 0; count < menu.length; count++)
   if (!keepMenus[count])
   menu[count][0].ref.visibility = 'hidden';
   changeCol(litNow, false);
   }
   
   // *** MENU CONSTRUCTION FUNCTIONS ***
   
   function Menu(isVert, popInd, x, y, width, overCol, backCol, borderClass, textClass) {
   // True or false - a vertical menu?
   this.isVert = isVert;
   // The popout indicator used (if any) for this menu.
   this.popInd = popInd
   // Position and size settings.
   this.x = x;
   this.y = y;
   this.width = width;
   // Colours of menu and items.
   this.overCol = overCol;
   this.backCol = backCol;
   // The stylesheet class used for item borders and the text within items.
   this.borderClass = borderClass;
   this.textClass = textClass;
   // Parent menu and item numbers, indexed later.
   this.parentMenu = null;
   this.parentItem = null;
   // Reference to the object's style properties (set later).
   this.ref = null;
   }
   
   function Item(text, href, frame, length, spacing, target) {
   this.text = text;
   this.href = href;
   this.frame = frame;
   this.length = length;
   this.spacing = spacing;
   this.target = target;
   // Reference to the object's style properties (set later).
   this.ref = null;
   }
   
   function writeMenus() {
   if (!isDOM && !isIE4 && !isNS4) return;
   
   for (currMenu = 0; currMenu < menu.length; currMenu++) with (menu[currMenu][0]) {
   // Variable for holding HTML for items and positions of next item.
   var str = '', itemX = 0, itemY = 0;
   
   // Remember, items start from 1 in the array (0 is menu object itself, above).
   // Also use properties of each item nested in the other with() for construction.
   for (currItem = 1; currItem < menu[currMenu].length; currItem++) with (menu[currMenu][currItem]) {
   var itemID = 'menu' + currMenu + 'item' + currItem;
   
   // The width and height of the menu item - dependent on orientation!
   var w = (isVert ? width : length);
   var h = (isVert ? length : width);
   
   // Create a div or layer text string with appropriate styles/properties.
   // Thanks to Paul Maden (www.paulmaden.com) for helping debug this in IE4, apparently
   // the width must be a miniumum of 3 for it to work in that browser.
   if (isDOM || isIE4) {
   str += '<div id="' + itemID + '" style="position: absolute; left: ' + itemX + '; top: ' + itemY + '; width: ' + w + '; height: ' + h + '; visibility: inherit; ';
   if (backCol) str += 'background: ' + backCol + '; ';
   str += '" ';
   }
   if (isNS4) {
   str += '<layer id="' + itemID + '" left="' + itemX + '" top="' + itemY + '" width="' +  w + '" height="' + h + '" visibility="inherit" ';
   if (backCol) str += 'bgcolor="' + backCol + '" ';
   }
   if (borderClass) str += 'class="' + borderClass + '" ';
   
   // Add mouseover handlers and finish div/layer.
   str += 'onMouseOver="popOver(' + currMenu + ',' + currItem + ')" onMouseOut="popOut(' + currMenu + ',' + currItem + ')">';
   
   // Add contents of item (default: table with link inside).
   // In IE/NS6+, add padding if there's a border to emulate NS4's layer padding.
   // If a target frame is specified, also add that to the <a> tag.
   
   str += '<table width="' + (w-8 ) + '" border="0" cellspacing="0" cellpadding="' + (!isNS4 && borderClass ? 3 : 0) + '" ><tr><td align="left" height="' + (h - 7) + '">' + '<a class="' + textClass + '" href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + text + '</a></td>';
   if (target > 0) {
   
   // Set target's parents to this menu item.
   menu[target][0].parentMenu = currMenu;
   menu[target][0].parentItem = currItem;
   
   // Add a popout indicator.
   if (popInd) str += '<td class="' + textClass + '" align="right">' + popInd + '</td>';
   }
   str += '</tr></table>' + (isNS4 ? '</layer>' : '</div>');
   if (isVert) itemY += length + spacing;
   else itemX += length + spacing;
   }
   if (isDOM) {
   var newDiv = document.createElement('div');
   document.getElementsByTagName('body').item(0).appendChild(newDiv);
   newDiv.innerHTML = str;
   ref = newDiv.style;
   ref.position = 'absolute';
   ref.visibility = 'hidden';
   }
   
   // Insert a div tag to the end of the BODY with menu HTML in place for IE4.
   if (isIE4) {
   document.body.insertAdjacentHTML('beforeEnd', '<div id="menu' + currMenu + 'div" ' + 'style="position: absolute; visibility: hidden ">' + str + '</div>');
   ref = getSty('menu' + currMenu + 'div');
   }
   
   // In NS4, create a reference to a new layer and write the items to it.
   if (isNS4) {
   ref = new Layer(0);
   ref.document.write(str);
   ref.document.close();
   }
   
   for (currItem = 1; currItem < menu[currMenu].length; currItem++) {
   itemName = 'menu' + currMenu + 'item' + currItem;
   if (isDOM || isIE4) menu[currMenu][currItem].ref = getSty(itemName);
   if (isNS4) menu[currMenu][currItem].ref = ref.document[itemName];
      }
   }
   with(menu[0][0]) {
   ref.left = x;
   ref.top = y;
   ref.visibility = 'visible';
      }
   with(menu[1][0]) {
   ref.left = x;
   ref.top = y;
   ref.visibility = 'hidden';
      }
   with(menu[2][0]) {
   ref.left = x;
   ref.top = y;
   ref.visibility = 'hidden';
      }
/*   with(menu[3][0]) {
   ref.left = x;
   ref.top = y;
   ref.visibility = 'hidden';
      }
/*   with(menu[4][0]) {
   ref.left = x;
   ref.top = y;
   ref.visibility = 'hidden';
      }
   with(menu[5][0]) {
   ref.left = x;
   ref.top = y;
   ref.visibility = 'hidden';
      }
   with(menu[6][0]) {
   ref.left = x;
   ref.top = y;
   ref.visibility = 'hidden';
      } */
   }
   
   // Syntaxes: *** START EDITING HERE, READ THIS SECTION CAREFULLY! ***
   //
   // menu[menuNumber][0] = new Menu(Vertical menu? (true/false), 'popout indicator', left, top,
   // width, 'mouseover colour', 'background colour', 'border stylesheet', 'text stylesheet');
   //
   // Left and Top are measured on-the-fly relative to the top-left corner of its trigger, or
   // for the root menu, the top-left corner of the page.
   //
   // menu[menuNumber][itemNumber] = new Item('Text', 'URL', 'target frame', length of menu item,
   //  additional spacing to next menu item, number of target menu to popout);
   //
   // If no target menu (popout) is desired, set it to 0. Likewise, if your site does not use
   // frames, pass an empty string as a frame target.
   //
   // Something that needs explaining - the Vertical Menu setup. You can see most menus below
   // are 'true', that is they are vertical, except for the first root menu. The 'length' and
   // 'width' of an item depends on its orientation -- length is how long the item runs for in
   // the direction of the menu, and width is the lateral dimension of the menu. Just look at
   // the examples and tweak the numbers, they'll make sense eventually :).
   
   var menu = new Array();
   var blank = "images/blank.gif";
   // Default colours passed to most menu constructors (just passed to functions, not
   // a global variable - makes things easier to change later in bulk).
   var defOver = '#d9e6ff', defBack = '#FFFFFF';
   
   // Default 'length' of menu items - item height if menu is vertical, width if horizontal.
   var defLength = 20;
   
   // Menu 0 is the special, 'root' menu from which everything else arises.
   menu[0] = new Array();
   // A non-vertical menu with a few different colours and no popout indicator, as an example.
   // *** MOVE ROOT MENU AROUND HERE ***  it's positioned at (5, 0) and is 17px high now.
   // set menu color
      menuover1=''
      menuback1= ''
   menu[0][0] = new Menu(false, '', 554, 146, 0, menuover1,menuback1, '', 'menumainlinks');
   // Notice how the targets are all set to nonzero values...
   // The 'length' of each of these items is 40, and there is spacing of 10 to the next item.
   // Most of the links are set to '#' hashes, make sure you change them to actual files.
   menu[0][1] = new Item('<img src=images/binary.gif width=76 height=26 border=0   onmouseover=MM_swapImage("Services","","images/menu/services-mo.gif",1) onmouseout=MM_swapImgRestore()>', '#', '', 76, 0, 1);
//    menu[0][2] = new Item('<img src=images/binary.gif width=123 height=23 border=0  onMouseOver=MM_swapImage("infra","","images/menu/infra_mo.gif",1) onMouseOut=MM_swapImgRestore()>', '#', '', 125, 0, 2);

	// About
   menu[1] = new Array();
   // The File menu is positioned 0px across and 22 down from its trigger, and is 80 wide.
   // All text in this menu has the stylesheet class 'item' -- see the <style> section above.
   // We've passed a 'greater-than' sign '>' as a popout indicator. Try an image...?
   menu[1][0] = new Menu(true, '<img src="images/home/bullet.gif" width="6" height="6" border="0" align="absmiddle">', 0, 26, 125, defOver, defBack, 'itemBorder', 'itemText');
   menu[1][1] = new Item('Professional Services', 'services.html', '', defLength, 0, 0);
   menu[1][2] = new Item('Surveys', 'survey.html', '', defLength, 0, 0);
   menu[1][3] = new Item('Valuation & Agency', 'valuation.html', '', defLength, 0, 0);
     
   // Infrastructre
   menu[2] = new Array();
   // The File menu is positioned 0px across and 22 down from its trigger, and is 80 wide.
   // All text in this menu has the stylesheet class 'item' -- see the <style> section above.
   // We've passed a 'greater-than' sign '>' as a popout indicator. Try an image...?
   menu[2][0] = new Menu(true, '<img src="images/home/bullet.gif" width="6" height="6" border="0" align="absmiddle">', 0, 23, 125, defOver, defBack, 'itemBorder', 'itemText');
   menu[2][1] = new Item('Library', 'labrary.html', '', defLength, 0, 0);
   menu[2][2] = new Item('Psychology & Science', 'sci-lab.html', '', defLength, 0, 0);
   menu[2][3] = new Item('Computer Lab', 'comlab.html', '', defLength, 0, 0);
   menu[2][4] = new Item('Audio-Visual', 'audio.html', '', defLength, 0, 0);
   menu[2][5] = new Item('Faculty', 'faculty.html', '', defLength, 0, 0);
   menu[2][6] = new Item('Teaching & Learning', 'traing.html', '', defLength, 0, 0);



   
  // These two lines handle the window resize bug in NS4. See <body onResize="...">.
   // I recommend you leave this here as otherwise when you resize NS4's width menus are hidden.
   
   var popOldWidth = window.innerWidth;
   nsResizeHandler = new Function('if (popOldWidth != window.innerWidth) location.reload()');
   
   // This is a quick snippet that captures all clicks on the document and hides the menus
   // every time you click. Use if you want.
   
   if (isNS4) document.captureEvents(Event.CLICK);
   //document.onclick = clickHandle;
   function clickHandle(evt)
   {
    if (isNS4) document.routeEvent(evt);
    hideAllBut(0);
   }

   // This is just the moving command for the example.
   
   function moveRoot()
   {
    with(menu[0][0].ref) left = ((parseInt(left) < 100) ? 100 : 5);
   }
   
   // JavaScript Document
var popUpWin=0;
function popUpWindow(URLStr, left, top, width, height)
{
  if(popUpWin)
  {
    if(!popUpWin.closed) popUpWin.close();
  }
  popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menub ar=no,scrollbar=no,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}
var popUpWin1=0;
function popUpWindow1(URLStr, left, top, width, height)
{
  if(popUpWin1)
  {
    if(!popUpWin1.closed) popUpWin1.close();
  }
  popUpWin1 = open(URLStr, 'popUpWin1', 'toolbar=no,location=no,directories=no,status=no,menub ar=no,scrollbars=yes,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}