// JavaScript Document

function changetab(id)
{
	if(id=='hotnews')
	{
		document.getElementById('hotnews').className='tab1_hover';
		document.getElementById('vietnamnews').className='tab2';
		document.getElementById('worldnews').className='tab3';		
	}
	if(id=='vietnamnews')
	{
		document.getElementById('hotnews').className='tab1';
		document.getElementById('vietnamnews').className='tab2_hover';
		document.getElementById('worldnews').className='tab3';
	}
	if(id=='worldnews')
	{
		document.getElementById('hotnews').className='tab1';
		document.getElementById('vietnamnews').className='tab2';
		document.getElementById('worldnews').className='tab3_hover';
	}	
	parameters="id="+id;
	post('index4.php?page=viewrss&id='+id,'rssnew', parameters);
}
function loadData(url,id)
{
	param="DATA=hiep";	
	post('index4.php'+url,id,param);
}
function loadMenu(url)
{
	param="DATA=hiep";	
	post('index4.php'+url,'fillproduct',param);
}
function post(url,id, parameters) {  
http_request = false;  
if (window.XMLHttpRequest) { // Mozilla, Safari,...  
http_request = new XMLHttpRequest();  
if (http_request.overrideMimeType) {  
http_request.overrideMimeType('text/xml');
//httpRequest.overrideMimeType('text/xml');
}  
} else if (window.ActiveXObject) { // IE  
try {  
http_request = new ActiveXObject("Msxml2.XMLHTTP");  
} catch (e) {  
try {  
http_request = new ActiveXObject("Microsoft.XMLHTTP");  
} catch (e) {}  
}  
}  
if (!http_request) {  
alert('Cannot create XMLHTTP instance');  
return false;  
}  
http_request.onreadystatechange = function()  
   {    
   		
     document.getElementById(id).innerHTML = "<div style='position:absolute'><img src='js/ajax-loader.gif' align='absmiddle' />&nbsp;<font color=green>Loading ...</div>";
       if (http_request.readyState == 4) {  
       if (http_request.status == 200) {  
       //alert(http_request.responseText); 
	   document.getElementById(id).innerHTML='';
       result = http_request.responseText;  
       document.getElementById(id).innerHTML = result;
       } else {  
		   if(confirm('Xảy ra lỗi ở trình duyệt.Click OK để refesh')); 
		   {
				window.location.reload(true);			   
		   }
       return false;
       }  
       }  
   }    
http_request.open('POST', url, true);  
/*xmlHttp.setRequestHeader//("Content-Type","application/ 
//x-www-form-urlencoded");*/
http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");  
http_request.setRequestHeader("Content-length", parameters.length);  
http_request.setRequestHeader("Connection", "close");  
http_request.send(parameters);  
return true;
}