<!------------------------------------------------------------------------
//
//  Copyright 2000 Microsoft Corporation.  All Rights Reserved.
//
//  File:         SmartNav.js
//
//  Description:  this file implements a basic delta model for aspplus
//
//----------------------------------------------------------------------->

window.__dbg = false;
if (window.__init == null &&  window.parent.__init == null)
{
    window.__applyDelta = function()
    {
        var fd = frames["__hifSmartNav"].document;
        if (document.location.href!=fd.location.href)
        {
            document.location.href=fd.location.href;
            return;
        }
        document.body.innerHTML = fd.body.innerHTML;
        var fdasptrace = fd.all['__asptrace'];
        if (typeof __asptrace == 'object' && fdasptrace != null)
        {
            try
            {
                __asptrace.innerText = fdasptrace.innerText;
            }
            catch (e) {};
        }
        window.setTimeout(window.__restoreFocus, 0);

        window.__attachForm();
        if (window.__dbg == true)
            document.body.appendChild(window.__hif);
    };

    window.__restoreFocus = function()
    {
        var __ae = document.all(window.__ae);
        try
        {
            if (__ae != null)
                __ae.focus();
        }
        catch(e){};
    }

    window.__loadHistory = function()
    {
        if (window.parent == window || window.parent.__init == null)
        {
          window.__initDelta();
          frames["__hifSmartNav"].document.location.href=document.location.href;
        }
    };

    window.__initDelta =  function()
    {
        window.__ae = document.activeElement.id;
        if (window.__ae.length == 0)
            window.__ae = document.activeElement.name;
        if (window.__hif != null)
        {
            if (window.__hif.parentElement == document.body)
                return;
            document.body.appendChild(window.__hif);
            return;
        }

        window.__hif = document.createElement("<IFRAME name=__hifSmartNav>");
        if (window.__dbg == true)
        {
            window.__hif.style.position = "absolute";
            window.__hif.style.top = "0";
            window.__hif.style.left = "0";
            window.__hif.style.height = "100";
            window.__hif.style.width = "100%";
        }
        else
            window.__hif.style.display = "none";
    
        window.__hif.attachEvent("onload", window.__applyDelta);
        document.body.appendChild(window.__hif);
    };

    window.__submit = function()
    {
        window.__initDelta();
        window.__form._submit();
    };

    window.__attachForm = function()
    {
        var cf = document.forms;
        for (var i=0; i<cf.length; i++)
        {
            if (cf[i].__smartNavEnabled != null)
            {
                window.__form = cf[i];
                break;
            }
        }
        
        if (window.__form == null)
            return;
    
        if (window.__form.__formAttached == true)
            return;
    
        window.__form.__formAttached = true;
        window.__form.attachEvent("onsubmit", window.__initDelta);
        window.__form._submit = window.__form.submit;
        window.__form.submit = window.__submit;
        window.__form.target = "__hifSmartNav";
    };

    window.__attachForm();
    window.attachEvent("onload", window.__loadHistory);
    window.__init = true;
}