startList = function() {
	if (document.all&&document.getElementById) {
		navRoot = document.getElementById("nav");
		for (i=0; i<navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
			if (node.nodeName=="LI") {
				node.onmouseover=function() {
					this.className+=" over";
					this.childNodes[0].style.background="#004a00";
				}
				node.onmouseout=function() {
					this.className=this.className.replace(" over", "");
					this.childNodes[0].style.background="";
				}
			}
		}
	}
}
window.onload=startList;

//if(top.location != document.location.href) {
//	top.location = document.location.href;}

var objRadChecked;
objRadChecked = false;

function FocusRadioObject(obj) 
{
      objRadChecked = obj.checked;
}

function FlipRadioSelection(obj) 
{
      if(objRadChecked == true)
            obj.checked=false;
      else
            obj.checked=true;
      
      objRadChecked = obj.checked;
}

function OnTreeClick(evt)
{
    var src = window.event != window.undefined ? window.event.srcElement : evt.target;
    var isChkBoxClick = (src.tagName.toLowerCase() == "input" && src.type == "checkbox");
    //alert("src.title="+src.title);
    if(isChkBoxClick)
    {
        var parentTable = GetParentByTagName("table", src);
        var nxtSibling = parentTable.nextSibling;
        //check if nxt sibling is not null & is an element node
        if(nxtSibling && nxtSibling.nodeType == 1)
        {
            if(nxtSibling.tagName.toLowerCase() == "div") //if node has children
            {
                //check or uncheck children at all levels
                CheckUncheckChildren(parentTable.nextSibling, src.checked);
            }
        }
        //check or uncheck parents at all levels
        CheckUncheckParents(src, src.checked);
    }
    else
    {
        var node = "";
    }
}

function CheckUncheckChildren(childContainer, check)
{
    var childChkBoxes = childContainer.getElementsByTagName("input");
    var childChkBoxCount = childChkBoxes.length;
    //alert("childChkBoxCount="+childChkBoxCount);
    for(var i=0;i<childChkBoxCount;i++)
    {
        childChkBoxes[i].checked = check;
    }
}

function CheckUncheckParents(srcChild, check)
{
    var parentDiv = GetParentByTagName("div", srcChild);
    var parentNodeTable = parentDiv.previousSibling;
    if(parentNodeTable)
    {
        var checkUncheckSwitch;
        if(check) //checkbox checked
        {
            var isAllSiblingsChecked = AreAllSiblingsChecked(srcChild);
            if(isAllSiblingsChecked)
            checkUncheckSwitch = true;
            else
            return; //do not need to check parent if any(one or more) child not checked
        }
        else //checkbox unchecked
        {
            checkUncheckSwitch = false;
        }
        var inpElemsInParentTable = parentNodeTable.getElementsByTagName("input");
        if(inpElemsInParentTable.length > 0)
        {
            var parentNodeChkBox = inpElemsInParentTable[0];
            parentNodeChkBox.checked = checkUncheckSwitch;
            //do the same recursively
            CheckUncheckParents(parentNodeChkBox, checkUncheckSwitch);
        }
    }
}

function AreAllSiblingsChecked(chkBox)
{

    var parentDiv = GetParentByTagName("div", chkBox);
    var childCount = parentDiv.childNodes.length;
    
    for(var i=0;i<childCount;i++)
    {
        if(parentDiv.childNodes[i].nodeType == 1)
        {
            //check if the child node is an element node
            if(parentDiv.childNodes[i].tagName.toLowerCase() == "table")
            {
                var prevChkBox = parentDiv.childNodes[i].getElementsByTagName("input")[0];
                //if any of sibling nodes are not checked, return false
                if(!prevChkBox.checked)
                {
                    return false;
                }
            }
        }
    }
    return true;
}

//utility function to get the container of an element by tagname
function GetParentByTagName(parentTagName, childElementObj)
{
    var parent = childElementObj.parentNode;
    while(parent.tagName.toLowerCase() != parentTagName.toLowerCase())
    {
        parent = parent.parentNode;
    }
    return parent;
}