/******************************************/
/*Treeview tickbox client handling - START*/
/******************************************/
function client_OnTreeNodeChecked(event) 
{
    var TreeNode = event.srcElement || event.target; 

    if (TreeNode.tagName == "INPUT" && TreeNode.type == "checkbox") 
    { 
        if(TreeNode.checked) 
        { 
            uncheckOthers(TreeNode.id);
        }
    } 
}

function uncheckOthers(id) 
{
    var elements = document.getElementsByTagName('input'); 

    for(var i = 0; i < elements.length; i++) 
    {
        if(elements.item(i).type == "checkbox") 
        {
            if (elements.item(i).id.indexOf("ctl00_CentreContent_FormView1_TreeViewNavigation") == 0)
            {
                if(elements.item(i).id!=id) 
                {
                    elements.item(i).checked = false; 
                }
            }
        } 
    }
}
/****************************************/
/*Treeview tickbox client handling - END*/
/****************************************/