var menuBasePath = "/careers/resources";
var menuDepthID = 1;
var menuPIDs = new Array();
var menuInited = 0;
var menuPendingEvent;
var menuPendingEventID;
var menuVisible = new Array();
var menuHysterisis = 200;
var menuIsIE = (navigator.appName == "Microsoft Internet Explorer");
var menuIsOpera = (navigator.appName == "Opera");
var menuTrimConst = (menuIsIE) ? 2 : 0;

/*	Find the offset of a given menu ID in the data array */
function menu_find_idx(id)
{
	for (idx = 0; idx < menuData.length; idx++) {
		if (menuData[idx][0] == id)
			return idx;
	}
	return false;
}
function array_contains(arr, key)
{
	for (acidx = 0; acidx < arr.length; acidx++) {
		if (arr[acidx] == key)
			return true;
	}
	return false;
}

/**
 *	Menu -> HTML generation functions
 */
function menu_write()
{
	var style, lastPID, lastDepth;

	/* Build parent ID list */
	menuPIDs = new Array();
	lastPID = -1;
	lastDepth = 0;
	for (n = 0; n < menuData.length; n++) {
		if (menuData[n][3] != lastPID) {
			/* Check if parent ID already in list */
			foundPID = false;
			for (ap = 0; ap < menuPIDs.length; ap++) {
				if (menuPIDs[ap] == menuData[n][3])
					foundPID = true;
			}
			if (!foundPID && menuData[n][3] != 0)
				menuPIDs[menuPIDs.length] = menuData[n][3];
			lastPID = menuData[n][3];

			parentIdx = menu_find_idx(lastPID);
			if (parentIdx)
				lastDepth = menuData[parentIdx][6] + 1;
		}
		menuData[n][6] = lastDepth;
	}

	/* Generate each block of data */
	//html = '<div class="topnavBar" id="topnav0">\n' + menu_write_group(0) + '</div>\n';
	html = '';
	for (pidx = 0; pidx < menuPIDs.length; pidx++) {
		pid = menuPIDs[pidx];
		style = "display: none; position: absolute; left: 20px; top: 20px; " + (menuIsIE ? " width: 1%;" : "");
		html += '<div class="topnavDrop" style="'+style+'" id="topnav'+pid+'"'+
			' onmouseover="menu_g_m_on('+pid+')" onmouseout="menu_g_m_out('+pid+')">\n' +
			menu_write_group(pid) + '</div>\n';
	}
	//ht_pre = '<pre>'+html.replace(/</g, "&lt;").replace(/>/g, "&gt;")+'</pre>';
	document.write(html);
}
function menu_write_group(pID)
{
	var lastID, startPos, cols, id, n, xdata, linkDest;

	lastID = 0;
	startPos = 0;
	cols = new Array();

	cols[0] = '';
	for (n = 0; n < menuData.length; n++) {
		if (menuData[n][3] == pID) {
			/* Split into next column if the IDs are non-sequential */
			//if (lastID + 1 != menuData[n][0] && lastID != 0 && menuData[n][3] > 0)
			//	cols[cols.length] = '';
			lastID = menuData[n][0];

			id = menuData[n][0];
			xdata = (typeof(menuData[n][4]) == "object") ?
				'<img src="'+menuData[n][4][0]+'" width="'+menuData[n][4][1]+'" height="'+
				menuData[n][4][2]+'" border="0" align="top" id="topnavImg'+id+'">'
				:
				/*(menuData[n][5] > 0 && menuData[n][3] != 0) ? ' &gt;' :*/ '';
			linkDest = (menuData[n][2].length > 0) ? menuData[n][2] : '#';
			cols[cols.length-1] += '\t<div>' +
				'<a id="topnavItem'+id+'" href="' + linkDest + '"' +
				(menuData[n][3] == 200 ? ' style="width: 77px; display: block;"' : '') +
				' onmouseover="menu_i_m_on('+id+')" onmouseout="menu_i_m_out('+id+')">' +
				'<span>' + menuData[n][1] + xdata + '</span></a></div>\n';
		}
	}
	if (cols.length > 1)
		return '<table><tr><td>' + cols.join('</td><td>') + '</td></tr></table>';
	else
		return cols[0];
}
function menu_init_stats()
{
	menuInited = 1;
}

/**
 *	Visibility control functions
 */

function menu_show(id)
{
	var mh_ix, r_ix, oGroup, oItem, oPGroup;

	if (menuInited == 0)
		menu_init_stats();

	/* Ensure parent nodes are shown */
	mh_ix = menu_find_idx(id);
	if (menuData[mh_ix][3] != 0)
		menu_show(menuData[mh_ix][3]);

	if (array_contains(menuVisible, id) || id == 0)
		return;

	oBannerWrap = document.getElementById("bannerWrapper");
	oBanner = document.getElementById("banner");
	oGroup = document.getElementById("topnav"+id);
	oItem = document.getElementById("topnavItem"+id);

	if (menuData[mh_ix][3] == 0) {
		/* Making this visible means we should cleanup any already exposed nodes */
		for (r_ix = 0; r_ix < menuVisible.length; r_ix++)
			menu_hide(menuVisible[r_ix]);

		/* This is a 2nd-level menu group */
		oItem.className = "mmSelected";
		iTop = oItem.offsetTop + oItem.offsetHeight;
		if (!menuIsOpera) iTop += oBannerWrap.offsetTop;
		oGroup.style.top = iTop + "px";
		oGroup.style.left = (menuData[mh_ix][7] + oBanner.offsetLeft) + "px";
		oGroup.style.display = "block";
		oGroup.style.width = ((oGroup.offsetWidth <= oItem.offsetWidth) ?
			oItem.offsetWidth : oGroup.offsetWidth - menuTrimConst) + "px";

		//Set the width (if required) of the drop down boxes in the Nav
		//if (id == 11) oGroup.style.width = "160px";
		//if (id == 14) oGroup.style.width = "150px";

		if (document.getElementById("topnavImg"+id)) {
			r_ix = menu_find_idx(id);
			oImg = document.getElementById("topnavImg"+id);
			oImg.src = menuData[r_ix][4][0].replace(/\./, "_on.");
		}
	}
	else {
		/* This is a 3rd-level or deeper menu group */
		oPGroup = oItem.parentNode.parentNode;
		oGroup.style.display = "block";
		oPGroup.style.display = "block";	// must be block to ensure the oPGroup.offset* props are set
		oGroup.style.top = oItem.parentNode.offsetTop + oPGroup.offsetTop - 2;
		oGroup.style.left = oPGroup.offsetLeft + oPGroup.offsetWidth - menuTrimConst;
		oGroup.style.width = oGroup.offsetWidth - menuTrimConst;
		oItem.parentNode.className = "mmSelected";
	}

	menuVisible.push(id);
//	document.getElementById("dbg").innerHTML = menuVisible.join(";");
}
function menu_hide(id)
{
	var mh_ix, oGroup, oItem;

	if (!array_contains(menuVisible, id) || id == 0)
		return;

	oGroup = document.getElementById("topnav"+id);
	oItem = document.getElementById("topnavItem"+id);
	menuPendingEventID = 0;

	mh_ix = menu_find_idx(id);
	if (menuData[mh_ix][3] == 0) {
		/* This is a 2nd-level menu group */
		oItem.className = "";
		oGroup.style.display = "none";
		if (document.getElementById("topnavImg"+id)) {
			ix = menu_find_idx(id);
			oImg = document.getElementById("topnavImg"+id);
			oImg.src = menuData[ix][4][0];
		}
	}
	else {
		/* This is a 3rd-level or deeper menu group */
		oGroup.style.display = "none";
		oItem.parentNode.className = "";

		//menuPendingEventID = menuData[mh_ix][3];
		//menuPendingEvent = window.setTimeout("menu_hide("+menuData[mh_ix][3]+")", menuHysterisis);
	}

	/* Pop this menu ID from the visibility list - push it up to the end of the list */
	for (mh_ix = 0; mh_ix < menuVisible.length - 1; mh_ix++) {
		if (menuVisible[mh_ix] == id) {
			menuVisible[mh_ix] = menuVisible[mh_ix+1];
			menuVisible[mh_ix+1] = id;
		}
	}
	menuVisible.pop();
//	document.getElementById("dbg").innerHTML = menuVisible.join(";");

	/* Ensure necessary parent nodes remain shown */
	for (mh_ix = 0; mh_ix < menuVisible.length; mh_ix++)
		menu_show(menuVisible[mh_ix]);
}
function menu_hide_all()
{
	var mh_ix;
	for (mh_ix = 0; mh_ix < menuVisible.length; mh_ix++)
		menu_hide(menuVisible[mh_ix]);
}

/* Item mouse over/out functions */
function menu_i_m_on(id)
{
	var ix, oImg;
	if (document.getElementById("topnav"+id))
		menu_show(id);
	else if (document.getElementById("topnavImg"+id)) {
		r_ix = menu_find_idx(id);
		oImg = document.getElementById("topnavImg"+id);
		if (menuData[r_ix][4][3] == 1)
			oImg.src = menuData[r_ix][4][0].replace(/\./, "_on.");
	}
}
function menu_i_m_out(id)
{
	if (document.getElementById("topnav"+id))
		menu_hide(id);
	else if (document.getElementById("topnavImg"+id)) {
		ix = menu_find_idx(id);
		oImg = document.getElementById("topnavImg"+id);
		if (menuData[r_ix][4][3] == 1)
			oImg.src = menuData[ix][4][0];
	}
}

/* Group mouse over/out functions */
function menu_g_m_on(id)
{
	if (menuPendingEventID == id)
		window.clearTimeout(menuPendingEvent);

	menu_show(id);
}
function menu_g_m_out(id)
{
	menuPendingEventID = id;
	menuPendingEvent = window.setTimeout("menu_hide("+id+")", menuHysterisis);
}


var menuData = [
	// 0=id, 1=title, 2=link_url, 3=parent_id, 4=image_data (src,width,height,is_rollover), 5=child_count, 6=depth, [set on load:] 7=Xcoord

	[11,'Us','/careers/us/',0,0,0,0,195],
	[12,'You','/careers/you/',0,0,0,0,388],
	[1758,'Clerkships_graduates','/careers/clerkships_graduates/',0,0,0,0,582],
	
	[21,'Where are we?','/careers/us/wherearewe.cfm',11,0,0,0],
	[22,'Practice Areas','/careers/us/7780221w.htm',11,0,0,0],
	[23,'Our People','/careers/us/profiles.cfm',11,0,0,0],
	[24,'Your Career','/careers/us/7780232w.htm',11,0,0,0],
	[25,'In the community','/careers/us/7780320w.htm',11,0,0,0],
	[20,'Benefits','/careers/us/7780172w.htm',11,0,0,0],
	[26,'Contact us','/contact_lists/C/9806480w.htm',11,0,0,0],
	[30,'Lawyers','/careers/you/7780336w.htm',12,0,0,0],
	[32,'Paralegals','/careers/you/7780351w.htm',12,0,0,0],
	[33,'Shared Services','/careers/you/7780356w.htm',12,0,0,0],
	[34,'Legal Support','/careers/you/7780736w.htm',12,0,0,0],
	[247,'Asia','/careers/you/8546601w.htm',12,0,0,0],
	[248,'Privacy Statement','/careers/opportunities/privacy.cfm?',12,0,0,0],
	[249,'Job search','/careers/opportunities/job-search.cfm?',12,0,0,0],
	[2011,'Insight','/careers/you/10249839W.htm',1758,0,0,0],
	[1720,'Graduates','/careers/you/8612990w.htm',1758,0,0,0],
	[1712,'Clerkships','/careers/you/7780346w.htm',1758,0,0,0]
];

/* Create menu structure */
menu_write();