var tab_use = ''; // global variable content id of current tabs
var url_id = '';  // global variable content id of current url

// chinh sua thong so cua url
function urlConfig(id, node)
{
    url_id  = id;
    
    open_change_link (node);
    
}


function linkConfExec(obj)
{
    var linkname    = document.getElementById('new_link_name').value;
    var linkurl     = document.getElementById('new_url').value;
    
    var reg = '^[ \=#\&\%\?\:\/\.a-zA-Z0-9\_\-]+$';
    if( !linkurl.match(reg) || linkname.length >= 25 || linkurl.length >= 400) {
        alert('Dia chi URL khong hop le. Vui long khong go Tieng Viet cho dia chi URL va do dai ten phai be hon 25');
        
        return false;
    }

    
    if(linkurl.search('http://') != 0 || linkurl.search('http://') == -1) {
        linkurl = 'http://' + linkurl;
    }
    
    
    
    
    // --> end chuan hoa
    obj.style.display   = 'none';
    
    var XMLhttp = getAjaxCore();
    
    XMLhttp.onreadystatechange  = function()
    {
        var inner   = document.getElementById('showListTabs');
        if(XMLhttp.readyState   != 4) {
            inner.innerHTML = '<center style="color:white"><b>Sending command ...</b></center>'
        }
        
        // da nhan du lieu
        else {
                showTAB(tab_use);

        }
        
        
    }
    
    // sending information
    
    var url = 'Ajax_script/changeURL.ajax.php?name={name}&url={url}&id={id}&tmp={random}';
    
    // chuan hoa
    url = url.replace('{random}', Math.random());
    url = url.replace('{name}', encodeURIComponent(linkname));
    url = url.replace('{url}', encodeURIComponent(linkurl));
    url = url.replace('{id}', encodeURIComponent(url_id));
    
    XMLhttp.open('GET', url, true);
    XMLhttp.send(null);
    
    document.getElementById('new_link_name').value    = document.getElementById('new_link_name').getAttribute('title');
    document.getElementById('new_url').value          = document.getElementById('new_url').getAttribute('title');
    

    
}


// dua ra thong ke cho trang web
function showStat()
{
    var XMLhttp = getAjaxCore();
    
    // onreadystatechange
    XMLhttp.onreadystatechange  = function()
    {
        var inner       = document.getElementById('ajax_loading');
        
        var availWidth  = parseInt(document.documentElement.clientWidth)/2 - 300 + 'px';
        
        inner.style.left    = availWidth;
        inner.style.top     = 300 + 'px';
        
        inner.style.display = 'block';
        
        if(XMLhttp.readyState   != 4) {
            var img = '<center><img src="gui/ajax-loader3.gif"></center>'; 
            if(inner.innerHTML  != img) inner.innerHTML = img; 
        }
        
        // get return
        else {
            var response    = XMLhttp.responseText;
            
            if(response != 'true') { // dang nhap hop le
                var re  = '';
                inner.innerHTML = response;
                
            } 
            
            
        }
        
        
        
    }
    
    // sending information
    var url = 'Ajax_script/stat.ajax.php?tmp={random}';
    
    // chuan hoa
    url = url.replace('{random}', Math.random());
    
    
    XMLhttp.open('GET', url, true);
    XMLhttp.send(null);
    
    
}