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);
}

var popTimer = 0;
var litNow = new Array();

function popOver(menuNum, itemNum) 
{
	clearTimeout(popTimer);
	hideAllBut(menuNum);
	litNow = getTree(menuNum, itemNum);
	changeCol(litNow, true);
	targetNum = menu[menuNum][itemNum].target;
	showMenu(targetNum, 0);
}

function popOut(menuNum, itemNum) 
{
	if ((menuNum == 0) && !menu[menuNum][itemNum].target)
		hideAllBut(0)
	else
	{
		popTimer = setTimeout('hideAllBut(0)', 500);
	}
}

function getTree(menuNum, itemNum) 
{
	itemArray = new Array(menu.length);
	while(1) 
	{
		itemArray[menuNum] = itemNum;
		if (menuNum == 0) 
			return itemArray;
		itemNum = menu[menuNum][0].parentItem;
		menuNum = menu[menuNum][0].parentMenu;
	}
}

function changeCol(changeArray, isOver) 
{
	for (menuCount = 0; menuCount < changeArray.length; menuCount++) 
	{
		if (changeArray[menuCount]) 
		{
			with (menuObj(menuCount,changeArray[menuCount]).style) 
			{
				backgroundColor = isOver ? (menuCount == 0 ? selBack : subSelBack) : (menuCount == 0 ? normBack : subNormBack);
				var tdelement = document.getElementById('linkmenu' + menuCount + 'item' + changeArray[menuCount]);
				//status = isOver + ',' + menu[menuCount][changeArray[menuCount]].img_off
				if (menu[menuCount][changeArray[menuCount]].img_off != '')
					tdelement.innerHTML = isOver ? '<img src="' + menu[menuCount][changeArray[menuCount]].img_on + '" border="0" align="top">' : '<img src="' + menu[menuCount][changeArray[menuCount]].img_off + '" border="0" align="top">';
				else
					tdelement.style.color = isOver ? (menuCount == 0 ? selText : subSelText) : (menuCount == 0 ? normText : subNormText);
			}
		}
	}
}

function hideAllBut(menuNum) {
	var keepMenus = getTree(menuNum, 1);
	for (count = 0; count < menu.length; count++)
		if (!keepMenus[count])
			hideMenu(count, 0);
	changeCol(litNow, false);
}

function hideMenu(menuNum, itemNum) {
	var mnu = document.getElementById('menu' + menuNum + 'item' + itemNum);
	if (mnu != null) 
		mnu.style.visibility = 'hidden';
}

function showMenu(menuNum, itemNum) {
	document.getElementById('menu' + menuNum + 'item' + itemNum).style.visibility = 'visible';
}

function menuObj(menuNum, itemNum) {
	return document.getElementById('menu' + menuNum + 'item' + itemNum);
}

function gotoHref(h) {
    document.location.href = h;
}

// *** MENU CONSTRUCTION FUNCTIONS ***

function Menu(isVert, popInd, height, borderClass, textClass) 
{
	this.isVert = isVert;
	this.popInd = popInd
	this.height = height;
	this.borderClass = borderClass;
	this.textClass = textClass;
	this.parentMenu = null;
	this.parentItem = null;
}

function Item(text, href, frame, height, target, img_on, img_off, cursor_style) 
{
	this.text = text;
	this.href = href;
	this.frame = frame;
	this.height = height;
	this.target = target;
	this.img_on = img_on;
	this.img_off = img_off;
	this.cursor_style = cursor_style;

	if ((href != '') && (href.substring(0,1) == '/') && (typeof(href_prefix) != "undefined")){
		this.href = href_prefix + href.substring(1);
	}
}

var globalX = 0;
var globalY = 0;

function writeMenus() 
{
	if (!isDOM && !isIE4 && !isNS4) 
		return;
	var menuPlace = document.getElementById('menu_place')
	if (menuPlace == null)
		return;
	var e=menuPlace;
	var left=e.offsetLeft;
	while ((e=e.offsetParent)!=null) 
	{ 
		left+=e.offsetLeft; 
	}
	var e=menuPlace;
	var top=e.offsetTop;
	while ((e=e.offsetParent)!=null) 
	{ 
		top+=e.offsetTop; 
	}
	if (top == 0 && left == 0)
	{
		setTimeout('writeMenus()', 300);
		return;
	}
	var menuPlaceX = left;
	var menuPlaceY = top;
	var offset = 0;
	var tmpOffset = 0;
	for (currMenu = 0; currMenu < menu.length; currMenu++) with (menu[currMenu][0]) 
	{
		var str = '', itemX = 0, itemY = 0;
		var menuID = 'menu' + currMenu + 'item0';
		if (currMenu == 0)
		{
			itemX += menuPlaceX;
			itemY += menuPlaceY;
			globalX = itemX;
			globalY = itemY;
		}
		else
		{
			itemX += menuPlaceX + offset;
			tmpOffset = offset;
			offset += menuObj(parentMenu, parentItem).offsetWidth + (separator ? 1 : 0);
			itemY += menuPlaceY + height;
		}
		str += '<table cellspacing="0" cellpadding="0" id="' + menuID + '" style="position: absolute; left: ' + itemX + '; top: ' + (itemY+1) + '; visibility: inherit; ';
		if (normBack) 
			str += 'background: ' + (currMenu == 0 ? normBack : subNormBack) + '; ';
		str += '" ';
		if ((borderClass) && (menu[currMenu].length > 1)) 
			str += 'class="' + borderClass + '"';
		str += ' xOffset='+ tmpOffset +'><tr>';
		for (currItem = 1; currItem < menu[currMenu].length; currItem++) with (menu[currMenu][currItem]) 
		{
			var itemID = 'menu' + currMenu + 'item' + currItem;
			str += '<td id="' + itemID + '" height="' + height + '"'
			str += ' onMouseOver="popOver(' + currMenu + ',' + currItem + ')" onMouseOut="popOut(' + currMenu + ',' + currItem + ')" '+ ((href != '') ? 'onClick="gotoHref(\''+ href +'\')"' : '') + '>';
			if (href != '')
			{
				if (img_off != '')
					str += '<a id="link' + itemID + '" class="' + textClass + '" href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + '<img src="' + img_off + '" border="0" align="top">' + '</a>';
				else
					str += '<a id="link' + itemID + '" class="' + textClass + '" '+ (currMenu != 0 ? 'style="color: '+ subNormText +'"' : '') +' href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + '&nbsp;&nbsp;' + text + '&nbsp;&nbsp;' + '</a>';
			}
			else
			{
				if (img_off != '')
					str += '<span id="link' + itemID + '" class="' + textClass + '" href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + '<img src="' + img_off + '" border="0" align="top">' + '</span>';
				else
					str += '<span id="link' + itemID + '" class="' + textClass + '" style="cursor: ' + cursor_style + '; '+ (currMenu != 0 ? 'color: '+ subNormText +'"' : '') +'" href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + '&nbsp;&nbsp;' + text + '&nbsp;&nbsp;' + '</span>';
			}
			if (target > 0) 
			{
				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 += '</td>'
			if (isVert) 
				str += '</tr><tr>'
			else
				if ((separator) && (currItem < menu[currMenu].length - 1))
					str += '<td bgcolor="white" width="1"></td>'
		}
		str += "</tr></table>"

		menuPlace.innerHTML += str;

		hideMenu(currMenu, 0)
	}

	showMenu(0, 0);
	menuPlace.innerHTML += '<form name="searchForm" method="post"><input type="hidden" name="words"><input type="hidden" name="method" value="and"><input type="hidden" value="score" name="sort"><input type="hidden" value="htdig_www" name="config"><input type="hidden" name="restrict"><input type="hidden" name="exclude"></form>';
}

document.onclick = clickHandle;

function clickHandle(evt)
{
    if (isNS4) document.routeEvent(evt);
    hideAllBut(0);
}

window.onresize = resizeHandle;
function resizeHandle()
{
	var menuPlace = document.getElementById('menu_place')
	if (menuPlace == null)
		return;
	var e=menuPlace;
	var left=e.offsetLeft;
	while ((e=e.offsetParent)!=null) 
	{ 
		left+=e.offsetLeft; 
	}
	for (currMenu = 0; currMenu < menu.length; currMenu++) with (menu[currMenu][0]) 
	{
		var n = document.getElementById('menu'+ currMenu +'item0');
		if (currMenu < 2)
			n.style.left = left;
		else
			n.style.left = left + parseInt(n.getAttribute('xOffset'));
	}
}

function px2int(st){
	return parseInt(st.substring(0,st.indexOf('px')),10);
}

function searchHandler(str) {
  document.location.href='/SearchResults.html?cx=007830758282692865437%3Adtektrihv0m&cof=FORID%3A9&q=' + str;
  return false;
}