window.onload = setupPage;

function setupPage()
{
	if (!document.getElementsByTagName)
	{
		return;
	}
	
	var anchors = document.getElementsByTagName("a");
	
	for (var i = 0; i < anchors.length; i++)
	{
		var anchor = anchors[i];
		
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
		{
			anchor.target = "_blank";
		}
	}
}

var menu1 = new Array();
menu1[0] = '<a href="vision">Overview</a>';
menu1[1] = '<a href="collaboration">Collaboration</a>';
menu1[2] = '<a href="standards">Standards</a>';
menu1[3] = '<a href="security">Security</a>';

var menu2 = new Array();
menu2[0] = '<a href="products">Overview</a>';
menu2[1] = '<a href="policynet">PolicyNet</a>';
menu2[2] = '<a href="smart-devices">Smart devices</a>';

var menu3 = new Array();
menu3[0] = '<a href="news">In The News</a>';
menu3[1] = '<a href="press-releases">Press Releases</a>';
menu3[2] = '<a href="events">Events</a>';

var menu4 = new Array();
menu4[0] = '<a href="about">Overview</a>';
menu4[1] = '<a href="team">Team</a>';
menu4[2] = '<a href="investors">Investors</a>';

function activate(menu, item)
{
	var array = eval("menu" + menu);
	
	if (array != null && array.length > item)
	{
		array[item] = array[item].replace('">', '" class="active">');
	}
}

var menuwidth = "150px";
var menubgcolor = "#fff";
var disappeardelay = 250;
var hidemenu_onclick = "yes";
var currentMenu = null;

var ie4 = document.all;
var ns6 = document.getElementById && !document.all;

if (ie4 || ns6)
{
	document.write('<div id="dropmenudiv" style="visibility: hidden; display: inline; width: ' + menuwidth + '; background-color: ' + menubgcolor + ';" onmouseover="clearhidemenu();" onmouseout="dynamichide(event);"></div>');
}

function getposOffset(what, offsettype)
{
	var totaloffset = (offsettype == "left") ? what.offsetLeft : what.offsetTop;
	var parentEl = what.offsetParent;
	
	while (parentEl != null)
	{
		totaloffset = (offsettype == "left") ? totaloffset + parentEl.offsetLeft : totaloffset + parentEl.offsetTop;
		parentEl = parentEl.offsetParent;
	}
	
	return totaloffset;
}

function showhide(obj, e, visible, hidden, menuwidth)
{
	if (ie4 || ns6)
	{
		dropmenuobj.style.left = dropmenuobj.style.top = "-500px";
	}
	
	if (menuwidth != "")
	{
		dropmenuobj.widthobj = dropmenuobj.style;
		dropmenuobj.widthobj.width = menuwidth;
	}
	
	if (e.type == "click" && obj.visibility == hidden || e.type == "mouseover")
	{
		obj.visibility = visible;
	}
	else if (e.type == "click")
	{
		obj.visibility = hidden;
	}
}

function iecompattest()
{
	return (document.compatMode && document.compatMode != "BackCompat") ? document.documentElement : document.body;
}

function clearbrowseredge(obj, whichedge)
{
	var edgeoffset = 0;
	
	if (whichedge == "rightedge")
	{
		var windowedge = ie4 && !window.opera ? iecompattest().scrollLeft + iecompattest().clientWidth - 15 : window.pageXOffset + window.innerWidth - 15;
		
		dropmenuobj.contentmeasure = dropmenuobj.offsetWidth;
		
		if (windowedge - dropmenuobj.x < dropmenuobj.contentmeasure)
		{
			edgeoffset = dropmenuobj.contentmeasure - obj.offsetWidth;
		}
	}
	else
	{
		var topedge = ie4 && !window.opera ? iecompattest().scrollTop : window.pageYOffset;
		var windowedge = ie4 && !window.opera ? iecompattest().scrollTop + iecompattest().clientHeight - 15 : window.pageYOffset + window.innerHeight - 18;
		
		dropmenuobj.contentmeasure = dropmenuobj.offsetHeight;
		
		if (windowedge - dropmenuobj.y < dropmenuobj.contentmeasure)
		{
			edgeoffset = dropmenuobj.contentmeasure + obj.offsetHeight;
			
			if ((dropmenuobj.y - topedge) < dropmenuobj.contentmeasure)
			{
				edgeoffset = dropmenuobj.y + obj.offsetHeight - topedge;
			}
		}
	}
	
	return edgeoffset;
}

function populatemenu(what)
{
	if (ie4 || ns6)
	{
		dropmenuobj.innerHTML = what.join("");
	}
}

function dropdownmenu(obj, e, menucontents, menuwidth, offset)
{
	if (window.event)
	{
		event.cancelBubble = true;
	}
	else if (e.stopPropagation)
	{
		e.stopPropagation();
	}
	
	clearhidemenu();
	
	dropmenuobj = document.getElementById ? document.getElementById("dropmenudiv") : dropmenudiv;
	
	populatemenu(menucontents);
	
	if (ie4 || ns6)
	{
		resetCurrentMenu();
		
		currentMenu = obj;
		currentMenu.className = "hover";
		
		showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth);
		
		var crossbrowseroffset = 0;
		var firefox = navigator.userAgent.indexOf("Firefox");
		var camino = navigator.userAgent.indexOf("Camino");
		
		if ((ie4 && !ns6 && !window.opera) || firefox != -1 || camino != -1)
		{
			crossbrowseroffset = 0;
		}
		
		dropmenuobj.x = getposOffset(obj, "left") + crossbrowseroffset + offset - 1;
		dropmenuobj.y = getposOffset(obj, "top") + crossbrowseroffset;
		dropmenuobj.style.left = dropmenuobj.x - clearbrowseredge(obj, "rightedge") + "px";
		dropmenuobj.style.top = dropmenuobj.y - clearbrowseredge(obj, "bottomedge") + obj.offsetHeight + "px";
	}
	
	return clickreturnvalue()
}

function clickreturnvalue()
{
	if (ie4 || ns6)
	{
		return false;
	}
	else
	{
		return true;
	}
}

function contains_ns6(a, b)
{
	while (b.parentNode)
	{
		if ((b = b.parentNode) == a)
		{
			return true;
		}
	}
	
	return false;
}

function dynamichide(e)
{
	if (ie4 && !dropmenuobj.contains(e.toElement))
	{
		delayhidemenu();
	}
	else if (ns6 && e.currentTarget != e.relatedTarget && !contains_ns6(e.currentTarget, e.relatedTarget))
	{
		delayhidemenu();
	}
}

function hidemenu(e)
{
	if (typeof dropmenuobj != "undefined")
	{
		if (ie4 || ns6)
		{
			resetCurrentMenu();
			
			dropmenuobj.style.visibility = "hidden";
		}
	}
}

function delayhidemenu()
{
	if (ie4 || ns6)
	{
		delayhide = setTimeout("hidemenu()", disappeardelay);
	}
}

function clearhidemenu()
{
	if (typeof delayhide != "undefined")
	{
		clearTimeout(delayhide);
	}
}

if (hidemenu_onclick == "yes")
{
	document.onclick = hidemenu;
}

function resetCurrentMenu()
{
	if (currentMenu != null)
	{
		currentMenu.className = "";
	}
}