<!-- Begin
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;
else 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';
   }
}
//function checkMenu(param) {
//if (param != "'','','',''")
//eval('loadFrames(' + param + ')');
//}
//function loadFrames(frame1,page1,frame2,page2) {
//eval("parent."+top+".location='content1.html"+page1+"'");
//eval("parent."+bottom+".location='content2.html"+page 2+"'");
//}

// 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();

// 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 = '#336699', defBack = '#003366';

// Default 'length' of menu items - item height if menu is vertical, width if horizontal.
var defLength = 22;

// 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.
menu[0][0] = new Menu(false, '', 5, 116, 17, '#669999', '#006666', '', 'itemText');
// 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('  &nbsp Faculty Profile', '#', '', 160, 10, 1);
menu[0][2] = new Item('  &nbsp Departmental Profile', '#', '', 170, 10, 2);
menu[0][3] = new Item('  &nbsp Others', '#', '', 130, 10, 3);

// Faculty Profile
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, '>', 0, 17, 160, defOver, defBack, 'itemBorder', 'itemText');
menu[1][1] = new Item('Architecture', 'arch.html', '', defLength, 0, 0);
menu[1][2] = new Item('Arts', 'arts.html', '', defLength, 0, 0);
menu[1][3] = new Item('Business and Economics', 'b&e.html', '', defLength, 0, 0);
menu[1][4] = new Item('Dentistry', 'dent.html', '', defLength, 0, 0);
menu[1][5] = new Item('Education', 'edu.html', '', defLength, 0, 0);
menu[1][6] = new Item('Engineering', 'eng.html', '', defLength, 0, 0);
menu[1][7] = new Item('Law', 'law.html', '', defLength, 0, 0);
menu[1][8] = new Item('Medicine', 'med.html', '', defLength, 0, 0);
menu[1][9] = new Item('Science', 'sci.html', '', defLength, 0, 0);
menu[1][10] = new Item('Social Sciences', 'socsci.html', '', defLength, 0, 0);
menu[1][11] = new Item('Non-faculty-based unit', 'cupem.html', '', defLength, 0, 0);

// Departmental Profile
menu[2] = new Array();
menu[2][0] = new Menu(true, '>', 0, 17, 170, defOver, defBack, 'itemBorder', 'itemText');
menu[2][1] = new Item('Architecture', '#', '', defLength, 0, 4);
menu[2][2] = new Item('Arts', '#', '', defLength, 0, 5);
menu[2][3] = new Item('Business and Economics', '#', '', defLength, 0, 6);
menu[2][4] = new Item('Dentistry', 'rpg_8000_gen.html', '_self', defLength, 0, 0);
menu[2][5] = new Item('Education', 'rpg_10000_gen.html', '_self', defLength, 0, 0);
menu[2][6] = new Item('Engineering', '#', '', defLength, 0, 7);
menu[2][7] = new Item('Law', '#', '', defLength, 0, 8);
menu[2][8] = new Item('Medicine', '#','', defLength, 0, 9);
menu[2][9] = new Item('Science', '#', '', defLength, 0, 10);
menu[2][10] = new Item('Social Sciences', '#', '', defLength, 0, 11);
menu[2][11] = new Item('Other units', '#', '', defLength, 0, 12);


// Index
menu[3] = new Array();
menu[3][0] = new Menu(true, '<', 0, 17, 130, defOver, defBack, 'itemBorder', 'itemText');
menu[3][1] = new Item('Index of researchers', 'rpg_author.html', '', defLength, 0, 0);
menu[3][2] = new Item('HKU Home', 'http://www.hku.hk/', '_new', defLength, 0, 0);
menu[3][3] = new Item('Research website', 'http://www.hku.hk/rss/', '_new', defLength, 0, 0);

// Faculty of Architecture
menu[4] = new Array();
menu[4][0] = new Menu(true, '>', 170, 0, 200, '#333366', '#666699', 'itemBorder', 'itemText');
menu[4][1] = new Item('Architecture', 'rpg_1100_gen.html','_self', 22, 0, 0);
menu[4][2] = new Item('Real Estate and Construction', 'rpg_1200_gen.html', '_self', 22, 0, 0);

//Faculty of Arts
menu[5] = new Array();
menu[5][0] = new Menu(true, '>', 170, 0, 200, '#333366', '#666699', 'itemBorder', 'itemText');
menu[5][1] = new Item('Chinese', 'rpg_4100_gen.html', '_self', 22, 0, 0);
menu[5][2] = new Item('Comparative Literature', 'rpg_4200_gen.html', '_self', 22, 0, 0);
menu[5][3] = new Item('English', 'rpg_4300_gen.html', '_self', 22, 0, 0);
menu[5][4] = new Item('Fine Arts', 'rpg_4400_gen.html', '_self', 22, 0, 0);
menu[5][5] = new Item('Geography', 'rpg_4500_gen.html', '_self', 22, 0, 0);
menu[5][6] = new Item('History', 'rpg_4600_gen.html', '_self', 22, 0, 0);
menu[5][7] = new Item('Japanese Studies', 'rpg_4700_gen.html', '_self', 22, 0, 0);
menu[5][8] = new Item('Linguistics', 'rpg_4800_gen.html', '_self', 22, 0, 0);
menu[5][9] = new Item('Music', 'rpg_4900_gen.html', '_self', 22, 0, 0);
menu[5][10] = new Item('Philosophy', 'rpg_5000_gen.html', '_self', 22, 0, 0);

//Faculty of Business and Economics
menu[6] = new Array();
menu[6][0] = new Menu(true, '>', 170, 0, 210, '#333366', '#666699', 'itemBorder', 'itemText');
menu[6][1] = new Item('School of Business', 'rpg_7100_gen.html', '_self', 22, 0, 0);
menu[6][2] = new Item('School of Economics and Finance', 'rpg_7200_gen.html', '_self', 22, 0, 0);

//Faculty of Engineering
menu[7] = new Array();
menu[7][0] = new Menu(true, '>', 170, 0, 300, '#333366', '#666699', 'itemBorder', 'itemText');
menu[7][1] = new Item('Civil Engineering', 'rpg_14100_gen.html', '_self', 22, 0, 0);
menu[7][2] = new Item('Computer Science and Information Systems', 'rpg_14200_gen.html', '_self', 22, 0, 0);
menu[7][3] = new Item('Electrical and Electronic Engineering', 'rpg_14300_gen.html', '_self', 22, 0, 0);
menu[7][4] = new Item('Industrial and Manufacturing Systems Engineering', 'rpg_14400_gen.html', '_self', 22, 0, 0);
menu[7][5] = new Item('Mechanical Engineering', 'rpg_14500_gen.html', '_self', 22, 0, 0);


//Faculty of Law
menu[8] = new Array();
menu[8][0] = new Menu(true, '>', 170, 0, 200, '#333366', '#666699', 'itemBorder', 'itemText');
menu[8][1] = new Item('Law', 'rpg_18100_gen.html', '_self', 22, 0, 0);
menu[8][2] = new Item('Professional and Legal Education', 'rpg_18200_gen.html', '_self', 22, 0, 0);

//Faculty of Medicine
menu[9] = new Array();
menu[9][0] = new Menu(true, '>', 170, -220, 220, '#333366', '#666699', 'itemBorder', 'itemText');
menu[9][1] = new Item('Anaesthesiology', 'rpg_20100_gen.html', '_self', 22, 0, 0);
menu[9][2] = new Item('Anatomy', 'rpg_20200_gen.html', '_self', 22, 0, 0);
menu[9][3] = new Item('Biochemistry', 'rpg_20300_gen.html', '_self', 22, 0, 0);
menu[9][4] = new Item('Clinical Oncology', 'rpg_21600_gen.html', '_self', 22, 0, 0);
menu[9][5] = new Item('Community Medicine', 'rpg_20400_gen.html', '_self', 22, 0, 0);
menu[9][6] = new Item('Diagnostic Radiology', 'rpg_20500_gen.html', '_self', 22, 0, 0);
menu[9][7] = new Item('Medicine', 'rpg_20600_gen.html', '_self', 22, 0, 0);
menu[9][8] = new Item('Microbiology', 'rpg_20700_gen.html', '_self', 22, 0, 0);
menu[9][9] = new Item('Nursing Studies', 'rpg_20800_gen.html', '_self', 22, 0, 0);
menu[9][10] = new Item('Obstetrics and Gynaecology', 'rpg_20900_gen.html', '_self', 22, 0, 0);
menu[9][11] = new Item('Orthopaedic Surgery', 'rpg_21000_gen.html', '_self', 22, 0, 0);
menu[9][12] = new Item('Paediatrics and Adolescent Medicine', 'rpg_21100_gen.html', '_self', 22, 0, 0);
menu[9][13] = new Item('Pathology', 'rpg_21200_gen.html', '_self', 22, 0, 0);
menu[9][14] = new Item('Pharmacology', 'rpg_21300_gen.html', '_self', 22, 0, 0);
menu[9][15] = new Item('Physiology', 'rpg_21400_gen.html', '_self', 22, 0, 0);
menu[9][16] = new Item('Psychiatry', 'rpg_21500_gen.html', '_self', 22, 0, 0);
menu[9][17] = new Item('Surgery', 'rpg_21700_gen.html', '_self', 22, 0, 0);

//Faculty of Science
menu[10] = new Array();
menu[10][0] = new Menu(true, '>', 170, -66, 200, '#333366', '#666699', 'itemBorder', 'itemText');
menu[10][1] = new Item('Botany', 'rpg_25100_gen.html', '_self', 22, 0, 0);
menu[10][2] = new Item('Chemistry', 'rpg_25200_gen.html', '_self', 22, 0, 0);
menu[10][3] = new Item('Earth Sciences', 'rpg_25300_gen.html', '_self', 22, 0, 0);
menu[10][4] = new Item('Ecology and Biodiversity', 'rpg_25400_gen.html', '_self', 22, 0, 0);
menu[10][5] = new Item('Mathematics', 'rpg_25500_gen.html', '_self', 22, 0, 0);
menu[10][6] = new Item('Physics', 'rpg_25600_gen.html', '_self', 22, 0, 0);
menu[10][7] = new Item('Zoology', 'rpg_25700_gen.html', '_self', 22, 0, 0);

//Faculty of Social Sciences
menu[11] = new Array();
menu[11][0] = new Menu(true, '>', 170, -66, 230, '#333366', '#666699', 'itemBorder', 'itemText');
menu[11][1] = new Item('Politics and Public Administration', 'rpg_30100_gen.html', '_self', 22, 0, 0);
menu[11][2] = new Item('Psychology', 'rpg_30200_gen.html', '_self', 22, 0, 0);
menu[11][3] = new Item('Social Work and Social Administration', 'rpg_30300_gen.html', '_self', 22, 0, 0);
menu[11][4] = new Item('Sociology', 'rpg_30400_gen.html', '_self', 22, 0, 0);
menu[11][5] = new Item('Statistics and Actuarial Science', 'rpg_30500_gen.html', '_self', 22, 0, 0);

//Non-faculty based units
menu[12] = new Array();
menu[12][0] = new Menu(true, '>', 170, -242, 250, '#333366', '#666699', 'itemBorder', 'itemText');
menu[12][1] = new Item('The Centre for the Advancement of ...', 'rpg_43100_gen.html', '_self', 22, 0, 0);
menu[12][2] = new Item('Centre of Asian Studies', 'rpg_43200_gen.html', '_self', 22, 0, 0);
menu[12][3] = new Item('CITE', 'rpg_10001_gen.html', '_self', 22, 0, 0);
menu[12][4] = new Item('Clinical Trials Centre', 'rpg_21180_gen.html', '_self', 22, 0, 0);
menu[12][5] = new Item('CUPEM', 'rpg_43300_gen.html', '_self', 22, 0, 0);
menu[12][6] = new Item('English Centre', 'rpg_43600_gen.html', '_self', 22, 0, 0);
menu[12][7] = new Item('Institute of Human Performance', 'rpg_45500_gen.html', '_self', 22, 0, 0);
menu[12][8] = new Item('Institute of Molecular Biology', 'rpg_43700_gen.html', '_self', 22, 0, 0);
menu[12][9] = new Item('Social Sciences Research Centre', 'rpg_30700_gen.html', '_self', 22, 0, 0);
menu[12][10] = new Item('SPACE', 'rpg_70300_gen.html', '_self', 22, 0, 0);
menu[12][11] = new Item('Technology Support Centre', 'rpg_44400_gen.html', '_self', 22, 0, 0);
menu[12][12] = new Item('University Health Service', 'rpg_57200_gen.html', '_self', 22, 0, 0);
menu[12][13] = new Item('University Libraries', 'rpg_40100_gen.html', '_self', 22, 0, 0);
menu[12][14] = new Item('University Museum and Art Gallery', 'rpg_40200_gen.html', '_self', 22, 0, 0);
menu[12][15] = new Item('Vice-Chancellor&quot;s Office', 'rpg_60100_gen.html', '_self', 22, 0, 0);


// *** OPTIONAL CODE FROM HERE DOWN ***

// 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);
}
//  End -->