function OnTaoBaoCao_Click(evt)
{
var src = window.event != window.undefined ? window.event.srcElement : evt.target;
//alert(src.type );
var isChkBoxClick = (src.tagName.toLowerCase() == "input" && src.type == "checkbox");
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);
}
}

function OnTreeClick(evt)
{
var src = window.event != window.undefined ? window.event.srcElement : evt.target;
//alert(src.type );
var isChkBoxClick = (src.tagName.toLowerCase() == "input" && src.type == "checkbox");
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);
}
}
function CheckUncheckChildren(childContainer, check)
{
    var childChkBoxes = childContainer.getElementsByTagName("input");
    var childChkBoxCount = childChkBoxes.length;
    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 = false;
            else
            return; //do not need to check parent if any(one or more) child not checked
        }
        else //checkbox unchecked
        {
            checkUncheckSwitch = true;
        }
        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;
}

function GetParentByTagName(parentTagName, childElementObj)
{
    var parent = childElementObj.parentNode;
    while(parent.tagName.toLowerCase() != parentTagName.toLowerCase())
    {
        parent = parent.parentNode;
    }
    return parent;
}