//----------------------------------------------------------------------------
// Code to determine the browser and version.
//----------------------------------------------------------------------------

function LumisMenu_Browser()
{
var ua, s, i;

this.isIE = false; // Internet Explorer
this.isOP = false; // Opera
this.isNS = false; // Netscape
this.version = null;

ua = navigator.userAgent;

s = "Opera";
if ((i = ua.indexOf(s)) >= 0)
{
this.isOP = true;
this.version = parseFloat(ua.substr(i + s.length));
return;
}

s = "Netscape6/";
if ((i = ua.indexOf(s)) >= 0)
{
this.isNS = true;
this.version = parseFloat(ua.substr(i + s.length));
return;
}

// Treat any other "Gecko" browser as Netscape 6.1.

s = "Gecko";
if ((i = ua.indexOf(s)) >= 0)
{
this.isNS = true;
this.version = 6.1;
return;
}

s = "MSIE";
if ((i = ua.indexOf(s)))
{
this.isIE = true;
this.version = parseFloat(ua.substr(i + s.length));
return;
}
}

var LumisMenu_browser = new LumisMenu_Browser();

//----------------------------------------------------------------------------
// Code for handling the menu bar
//----------------------------------------------------------------------------

var LumisMenu_activeButton = null;

function LumisMenu_ExpandMenu(strDivID)
{
var strCurStyle = document.getElementById(strDivID).style.display;

if(strCurStyle == "none")
document.getElementById(strDivID).style.display="";
else
document.getElementById(strDivID).style.display="none";
}

function LumisMenu_buttonClick(event, menuId, isVerticalMenu)
{
var button;

LumisMenu_ShowPopups();

// Get the target button element.

if (LumisMenu_browser.isIE)
button = window.event.srcElement;
else
button = event.currentTarget;

// Blur focus from the link to remove that annoying outline.

button.blur();

// Associate the named menu to this button if not already done.
// Additionally, initialize menu display.

if (button.menu == null)
{
button.menu = document.getElementById(menuId);
if (button.menu.isInitialized == null)
LumisMenu_menuInit(button.menu);
}

// Set mouseout event handler for the button, if not already done.

if (button.onmouseout == null)
button.onmouseout = LumisMenu_buttonOrMenuMouseout;

// Exit if this button is the currently active one.

if (button == LumisMenu_activeButton)
return false;

// Reset the currently active button, if any.

if (LumisMenu_activeButton != null)
LumisMenu_resetButton(LumisMenu_activeButton);

// Activate this button, unless it was the currently active one.

if (button != LumisMenu_activeButton)
{
LumisMenu_depressButton(button, isVerticalMenu);
LumisMenu_activeButton = button;
}
else
LumisMenu_activeButton = null;

return false;
}

function LumisMenu_buttonMouseover(event, menuId, isVerticalMenu)
{
var button;

// Activates this button's menu if no other is currently active.

if (LumisMenu_activeButton == null)
{
LumisMenu_buttonClick(event, menuId, isVerticalMenu);
return;
}

// Find the target button element.

if (LumisMenu_browser.isIE)
button = window.event.srcElement;
else
button = event.currentTarget;

// If any other button menu is active, make this one active instead.

if (LumisMenu_activeButton != null && LumisMenu_activeButton != button)
LumisMenu_buttonClick(event, menuId, isVerticalMenu);
}

function LumisMenu_depressButton(button, isVerticalMenu)
{
var x, y;

// Update the button's style class to make it look like it's
// depressed.

button.className += " menuButtonActive";

// Set mouseout event handler for the button, if not already done.

if (button.onmouseout == null)
button.onmouseout = LumisMenu_buttonOrMenuMouseout;
if (button.menu.onmouseout == null)
button.menu.onmouseout = LumisMenu_buttonOrMenuMouseout;

// Position the associated drop down menu under the button and
// show it.

if(isVerticalMenu)
{
if (LumisMenu_browser.isNS)
{
x = LumisMenu_getPageOffsetLeft(button) + button.offsetWidth - 19;
y = LumisMenu_getPageOffsetTop(button);
}
else
{
x = LumisMenu_getPageOffsetLeft(button) + button.offsetWidth;
y = LumisMenu_getPageOffsetTop(button)-2;
}
}
else
{
x = LumisMenu_getPageOffsetLeft(button);
y = LumisMenu_getPageOffsetTop(button) + button.offsetHeight-1;
}

// For IE, adjust position.

if (LumisMenu_browser.isIE)
{
x += button.offsetParent.clientLeft;
y += button.offsetParent.clientTop;
}

button.menu.style.left = x + "px";
button.menu.style.top = y + "px";
button.menu.style.visibility = "visible";
}

function LumisMenu_resetButton(button)
{
// Restore the button's style class.

LumisMenu_removeClassName(button, "menuButtonActive");

// Hide the button's menu, first closing any sub menus.

if (button.menu != null)
{
LumisMenu_closeSubMenu(button.menu);
button.menu.style.visibility = "hidden";
}
}

//----------------------------------------------------------------------------
// Code to handle the menus and sub menus.
//----------------------------------------------------------------------------

function LumisMenu_menuMouseover(event)
{
var menu;

// Find the target menu element.

if (LumisMenu_browser.isIE)
{
menu = LumisMenu_getContainerWith(window.event.srcElement, "DIV", "menu");
if(!menu)
menu = LumisMenu_getContainerWith(window.event.srcElement, "DIV", "menuVert");
}
else
menu = event.currentTarget;

// Close any active sub menu.

if (menu.activeItem != null)
LumisMenu_closeSubMenu(menu);
}

function LumisMenu_menuItemMouseover(event, menuId)
{
var item, menu, x, y;

// Find the target item element and its parent menu element.

if (LumisMenu_browser.isIE)
item = LumisMenu_getContainerWith(window.event.srcElement, "A", "menuItem");
else
item = event.currentTarget;

menu = LumisMenu_getContainerWith(item, "DIV", "menu");
if(!menu)
menu = LumisMenu_getContainerWith(item, "DIV", "menuVert");

// Close any active sub menu and mark this one as active.

if (menu.activeItem != null)
LumisMenu_closeSubMenu(menu);
menu.activeItem = item;

// Highlight the item element.

item.className += " menuItemHighlight";

// Initialize the sub menu, if not already done.

if (item.subMenu == null)
{
item.subMenu = document.getElementById(menuId);
if (item.subMenu.isInitialized == null)
LumisMenu_menuInit(item.subMenu);
}

// Set mouseout event handler for the sub menu, if not already done.

if (item.subMenu.onmouseout == null)
item.subMenu.onmouseout = LumisMenu_buttonOrMenuMouseout;

// Get position for submenu based on the menu item.

x = LumisMenu_getPageOffsetLeft(item) + item.offsetWidth;
y = LumisMenu_getPageOffsetTop(item);

// Adjust position to fit in view.

var maxX, maxY;

if (LumisMenu_browser.isIE)
{
maxX = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft) +
(document.documentElement.clientWidth != 0 ? document.documentElement.clientWidth : document.body.clientWidth);
maxY = Math.max(document.documentElement.scrollTop, document.body.scrollTop) +
(document.documentElement.clientHeight != 0 ? document.documentElement.clientHeight : document.body.clientHeight);
}

if (LumisMenu_browser.isOP)
{
maxX = document.documentElement.scrollLeft + window.innerWidth;
maxY = document.documentElement.scrollTop + window.innerHeight;
}

if (LumisMenu_browser.isNS)
{
maxX = window.scrollX + window.innerWidth;
maxY = window.scrollY + window.innerHeight;
}

maxX -= item.subMenu.offsetWidth;
maxY -= item.subMenu.offsetHeight;

if (x > maxX)
x = Math.max(0, x - item.offsetWidth - item.subMenu.offsetWidth + (menu.offsetWidth - item.offsetWidth));

y = Math.max(0, Math.min(y, maxY));

// Position and show the sub menu.

item.subMenu.style.left = x + "px";
item.subMenu.style.top = y + "px";
item.subMenu.style.visibility = "visible";

// Stop the event from bubbling.

if (LumisMenu_browser.isIE)
window.event.cancelBubble = true;
else
event.stopPropagation();
}

function LumisMenu_closeSubMenu(menu)
{
if (menu == null || menu.activeItem == null)
return;

// Recursively close any sub menus.

if (menu.activeItem.subMenu != null)
{
LumisMenu_closeSubMenu(menu.activeItem.subMenu);
menu.activeItem.subMenu.style.visibility = "hidden";
menu.activeItem.subMenu = null;
}

LumisMenu_removeClassName(menu.activeItem, "menuItemHighlight");
menu.activeItem = null;
}

// event on buttons and menus.

function LumisMenu_buttonOrMenuMouseout(event)
{
var el;

// If there is no active button, exit.

if (LumisMenu_activeButton == null)
return;

// Find the element the mouse is moving to.

if (LumisMenu_browser.isIE)
el = window.event.toElement;
else if (event.relatedTarget != null)
el = (event.relatedTarget.tagName ? event.relatedTarget : event.relatedTarget.parentNode);

// If the element is not part of a menu, reset the active button.

if (LumisMenu_getContainerWith(el, "DIV", "menu") == null && LumisMenu_getContainerWith(el, "DIV", "menuVert") == null)
{
LumisMenu_resetButton(LumisMenu_activeButton);
LumisMenu_activeButton = null;

LumisMenu_HidePopups();
}
}

//----------------------------------------------------------------------------
// Code to initialize menus.
//----------------------------------------------------------------------------

function LumisMenu_menuInit(menu)
{
var itemList, spanList;
var textEl, arrowEl;
var itemWidth;
var w, dw;
var i, j;

// Insert arrow characters by browser.

menu.style.lineHeight = "2.5ex";
spanList = menu.getElementsByTagName("SPAN");
for (i = 0; i < spanList.length; i++)
{
if (LumisMenu_hasClassName(spanList[i], "menuItemArrow"))
{
if (LumisMenu_browser.isIE)
{
spanList[i].style.fontFamily = "Webdings";
spanList[i].firstChild.nodeValue = "4";
}
else
{
spanList[i].innerHTML = "<span style='font-size:9px;'>&#9654;</span>";
}
}
}

// Find the width of a menu item.

itemList = menu.getElementsByTagName("A");
if (itemList.length > 0)
itemWidth = itemList[0].offsetWidth;
else
return;

// Fix IE hover problem by setting an explicit width on first item of
// the menu.

if (LumisMenu_browser.isIE)
{
w = itemList[0].offsetWidth;
itemList[0].style.width = w + "px";
dw = itemList[0].offsetWidth - w;
w -= dw;
itemList[0].style.width = w + "px";
}

// Mark menu as initialized.

menu.isInitialized = true;
}

//----------------------------------------------------------------------------
// General utility functions.
//----------------------------------------------------------------------------

function LumisMenu_getContainerWith(node, tagName, className)
{
// Starting with the given node, find the nearest containing element
// with the specified tag name and style class.

while (node != null)
{
if (node.tagName != null && node.tagName == tagName && LumisMenu_hasClassName(node, className))
return node;
node = node.parentNode;
}

return node;
}

function LumisMenu_hasClassName(el, name)
{
var i, list;

// Return true if the given element currently has the given class
// name.

list = el.className.split(" ");
for (i = 0; i < list.length; i++)
{
if (list[i] == name)
return true;
}

return false;
}

function LumisMenu_removeClassName(el, name)
{
var i, curList, newList;

if (el.className == null)
return;

// Remove the given class name from the element's className property.

newList = new Array();
curList = el.className.split(" ");
for (i = 0; i < curList.length; i++)
{
if (curList[i] != name)
newList.push(curList[i]);
}
el.className = newList.join(" ");
}

function LumisMenu_getPageOffsetLeft(el)
{
var x;

// Return the x coordinate of an element relative to the page.

x = el.offsetLeft;
if (el.offsetParent != null)
x += LumisMenu_getPageOffsetLeft(el.offsetParent);

return x;
}

function LumisMenu_getPageOffsetTop(el)
{
var y;

// Return the x coordinate of an element relative to the page.

y = el.offsetTop;
if (el.offsetParent != null)
y += LumisMenu_getPageOffsetTop(el.offsetParent);

return y;
}

function LumisMenu_HidePopups()
{
var arrForms = document.forms;
for(var i=0; i<arrForms.length; i++)
{
var arrElements = arrForms[i].elements;
for(var j=0; j<arrElements.length; j++)
{
if(arrElements[j].tagName.toUpperCase() == "SELECT")
arrElements[j].style.visibility="";
}
}
}

function LumisMenu_ShowPopups(xPos, yPos)
{
var arrForms = document.forms;
for(var i=0; i<arrForms.length; i++)
{
var arrElements = arrForms[i].elements;
for(var j=0; j<arrElements.length; j++)
{
if(arrElements[j].tagName.toUpperCase() == "SELECT")
arrElements[j].style.visibility="hidden";
}
}
}