var hoverClass = "AspNet-Menu-Hover";
var topmostClass = "AspNet-Menu";
var subitemClass = "AspNet-Menu-SubItem";
var userAgent = navigator.userAgent;
var versionOffset = userAgent.indexOf("MSIE");
var isIE = (versionOffset >= 0);
var isPreIE7 = false;
var fullVersionIE = "";
var majorVersionIE = "";
var boundingHost = null;

if (isIE)
{
    fullVersionIE = parseFloat(userAgent.substring(versionOffset+5, userAgent.length));
    majorVersionIE = parseInt('' + fullVersionIE);
//    isPreIE7 = majorVersionIE < 7;
}

function Hover__AspNetMenu(element)
{
    AddClass__WorleyParsonsAdapters(element, hoverClass);

    if (isPreIE7)
    {
        var child = element.firstChild;
        while (child)
        {
            if (child.tagName == "UL")
            {
                var grandchild = child.firstChild;
                while (grandchild)
                {
                    if (grandchild.tagName == "LI")
                    {
                        if ((typeof(grandchild.iFrameFormElementMask) != "undefined") && (grandchild.iFrameFormElementMask != null))
                        {
                            grandchild.iFrameFormElementMask.style.display = "block";
                            
                            var w = grandchild.offsetWidth;
                            if ((grandchild.offsetWidth == 0) && (typeof(element.iFrameFormElementMask) != "undefined") && (element.iFrameFormElementMask != null) && (element.iFrameFormElementMask.style.width.length > 0))
                            {
                                w = element.iFrameFormElementMask.style.width;
                            }
                            grandchild.iFrameFormElementMask.style.width = w;
                            
                            var h = grandchild.offsetHeight + 5 /* fudge to cover margins between menu items */;
                            if ((grandchild.offsetHeight == 0) && (typeof(element.iFrameFormElementMask) != "undefined") && (element.iFrameFormElementMask != null) && (element.iFrameFormElementMask.style.height.length > 0))
                            {
                                h = element.iFrameFormElementMask.style.height;
                            }
                            grandchild.iFrameFormElementMask.style.height = h;
                        }
                    }
                    
                    grandchild = grandchild.nextSibling;
                }
            }

            child = child.nextSibling;
        }
    }
}

function Unhover__AspNetMenu(element)
{
    RemoveClass__WorleyParsonsAdapters(element, hoverClass);

    if (isPreIE7)
    {
        var child = element.firstChild;
        while (child)
        {
            if (child.tagName == "UL")
            {
                var grandchild = child.firstChild;
                while (grandchild)
                {
                    if (grandchild.tagName == "LI")
                    {
                        if ((typeof(grandchild.iFrameFormElementMask) != "undefined") && (grandchild.iFrameFormElementMask != null))
                        {
                            grandchild.iFrameFormElementMask.style.display = "none";
                        }
                    }

                    grandchild = grandchild.nextSibling;
                }
            }

            child = child.nextSibling;
        }
    }
}

function css_val(_elem, _style)
{
  var computedStyle;
  if (typeof _elem.currentStyle != 'undefined')
    { computedStyle = _elem.currentStyle; }
  else
    { computedStyle = document.defaultView.getComputedStyle(_elem, null); }

  return computedStyle[_style];
}


function SetHover__AspNetMenu()
{
    var menus = document.getElementsByTagName("ul");
    for (var i=0; i<menus.length; i++)
    {
        // added by joe
        if (menus[i].parentNode.nodeName.toLowerCase() == "li")
        {
            // we need to get the width of the hosting object - to make sure popup menus don't overlap the rightmost boundaries
            // we'll do this by finding:
            // a. the nearest parent control with style.position=(absolute|relative)
            // b. document.body
            var p = null;
            if (boundingHost == null)
            {
                p = menus[i];
                while ((p = p.parentNode) != null)
                {
                    if (css_val(p, 'position') == 'absolute'
                            || css_val(p, 'position') == 'relative'
                            || p == document.body)
                    {
                        break;
                    }
                }
            }
            else{
                p = boundingHost;
            }
        
            var padding = css_val(p, 'paddingRight');
            padding = parseInt(padding.substr(0, padding.length-2));
            var l = menus[i].offsetLeft;
            var w = menus[i].offsetWidth;
            
            var tw = p.offsetWidth-(padding*2);
            if (l+w > tw) {
                menus[i].style.right = /*((l+w)-tw) + */((0 - padding) / 2) + 'px';
            }
        } // end addition
        else if(menus[i].className.indexOf(topmostClass) > -1)
        {
            var items = menus[i].getElementsByTagName("li");
            for (var k=0; k<items.length; k++)
            {
                items[k].onmouseover = function() { Hover__AspNetMenu(this); }
                items[k].onmouseout = function() { Unhover__AspNetMenu(this); }
                
                if (isPreIE7 && ((typeof(items[k].iFrameFormElementMask) == "undefined") || (items[k].iFrameFormElementMask == null)))
                {
                    var iFrameFormElementMask = document.createElement("IFRAME");
                    iFrameFormElementMask.scrolling= "no";
                    iFrameFormElementMask.src = "javascript:false;";
                    iFrameFormElementMask.frameBorder = 0;
                    iFrameFormElementMask.style.display = "none";
                    iFrameFormElementMask.style.position = "absolute";
                    iFrameFormElementMask.style.filter = "progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)";

                    iFrameFormElementMask.style.zIndex = 101;
                    items[k].insertBefore(iFrameFormElementMask, items[k].firstChild);
                    items[k].iFrameFormElementMask = iFrameFormElementMask;
                }                
            }
        }
    }
}

//if (isPreIE7)
{
	addLoadEvent(SetHover__AspNetMenu);
}