function tieudiem_forward() {
    document.getElementById('tieudiem_content_animation').style.position = 'absolute';
    document.getElementById('tieudiem_content').style.position = 'relative';
    document.getElementById('tieudiem_content').style.height = (eval(document.getElementById('tieudiem_content_animation').offsetHeight)) + 'px';    
    if (currenttab < maxtab) {
        var leftpx = currenttab * (-550);
        $('#tieudiem_content_animation').animate({ left: leftpx }, 500);
        currenttab++;
    }
    if (currenttab > maxtab) currenttab = maxtab;
}
function tieudiem_backward() {
    if (currenttab > 1) {
        var leftpx = (currenttab - maxtab + 1) * (-550);
        $('#tieudiem_content_animation').animate({ left: leftpx }, 500);
        currenttab--;
    }
    if (currenttab < 1) currenttab = 1;
}
function LoadImage(id,src)
    {
        if (id.getAttribute("loi") == null)
        {  
            id.setAttribute("loi","1");
        } 
        else 
        { 
            id.setAttribute("loi",eval(id.getAttribute("loi")) + 1);
        }

        if (eval(id.getAttribute("loi")) >=2)
        { 
            var width = src.substr(src.lastIndexOf("=") + 1,src.length - src.lastIndexOf("=")); 
            id.onerror = null; 
            id.src = "/Images/no_image.jpg"; 
        } 
        else 
        {
            id.src = src;
        }   
    }
function AjaxRequestURL(div,url){var obj = document.getElementById(div);if (obj){obj.innerHTML = "<img src='/Images/loading.gif'/>";}var xmlHttp;try{if (!document.all){xmlHttp=new XMLHttpRequest();}else{try{xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");}catch (e){xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");}}}catch (e){alert("Your browser does not support AJAX!");return false;}; xmlHttp.onreadystatechange=function(){if(xmlHttp.readyState==4){if (obj) obj.innerHTML =xmlHttp.responseText;}}; xmlHttp.open("GET",url,true); xmlHttp.send(null);}

function SearchPress(event)
{
    var textSearch = document.getElementById('txtSearchTin');    
	var strSearch = textSearch.value;
    var url = "";	
    var key;    
    if(window.event)
    {
        key = window.event.keyCode;        
        if (key == 13)
        {                                     
            if(textSearch.value!="")
            {   
                strSearch = strSearch.replace('?', '').replace(/"/g, '').replace(/^\s+|\s+$/g, '');    
                if(strSearch=="") return false;
                else if(strSearch.indexOf("?")!=-1) return false;
                strSearch = encodeURIComponent(strSearch);
                url = "/tim-kiem.htm?key="+strSearch+"&bl=2";
                document.location.href = url;                   
                return false;
            }
            else
            {
                alert("The search box is empty!");
                return false;
            }            
        }    
    }
    else
    {
        key = event.which;    
        
        if (key == 13)
        {
              
            if(textSearch.value!="")
            {
                strSearch = strSearch.replace('?', '').replace(/"/g, '').replace(/^\s+|\s+$/g, '');    
                if(strSearch=="") return false;
                else if(strSearch.indexOf("?")!=-1) return false;
                strSearch = encodeURIComponent(strSearch);
                url = "/tim-kiem.htm?key="+strSearch+"&bl=2";
                document.location.href = url;                    
                return false;
            }
            else
            {
                alert("The search box is empty!");
                
                return false;
            }
            
        }    
    }               
}

function SearchKlic()
{
    var textSearch = document.getElementById('txtSearchTin');    
	var strSearch = textSearch.value;
    strSearch = strSearch.replace('?', '').replace(/"/g, '').replace(/^\s+|\s+$/g, '');    
    if(strSearch=="") return false;
    else if(strSearch.indexOf("?")!=-1) return false;
	strSearch = encodeURIComponent(strSearch);
	var url = "/tim-kiem.htm?key="+strSearch+"&bl=2";    			
    if(strSearch!="")
    {            
		document.location.href= url;
        return false;
    }
    else
    {
        alert("The search box is empty!");
        return false;
    }                    
}
function SearchFocus() {
    var textSearch = document.getElementById('txtSearchTin');
    text = textSearch.value;
    if (text == "Search") textSearch.value = "";
}

function SearchBlur() {
    var textSearch = document.getElementById('txtSearchTin');
    text = textSearch.value;
    if (text == "") textSearch.value = "Search";
}
function optCafeFClick()
{
    var txtSearchTin = document.getElementById('txtSearchTin');
    txtSearchTin.style.display = 'none';        
    document.getElementById('txtCafeFS').style.display = '';        
    var lbkOK = document.getElementById('imgSearch');      
    lbkOK.style.display = 'none';  
    return true;
}
function optNewsClick()
{
    
    var txtSearchTin = document.getElementById('txtSearchTin');     
    txtSearchTin.style.display = '';
    document.getElementById('txtCafeFS').style.display = 'none';
    var lbkOK = document.getElementById('imgSearch');     
    lbkOK.style.display = '';  
    return true;
}


function CheckVote()
{
    var ctr = document.getElementById('listvote');   
    var checkboxlist = ctr.getElementsByTagName("input");
    var ok = false;
    for(var i= 0 ; i < checkboxlist.length ; i++)
    {            
        if (checkboxlist[i].checked == true)
        {                
            ok = true;
        }
    }
    if (!ok)
    {
        checkboxlist[0].focus();
        alert("You have not choose !");
        return false;
    }
    return true;
}