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='AjaxLib/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;
}

function loadContent(page,domain){
poststr="data=home";

post('index4.php?page='+page+'&domain='+domain,'content',poststr);

}


function postContact(page){
	poststr="DATA="+ encodeURIComponent(document.getElementById("name").value)+  
	" "+ encodeURIComponent(document.getElementById("address").value)+
	" "+ encodeURIComponent(document.getElementById("phone").value)+
	" "+ encodeURIComponent(document.getElementById("fax").value)+
	" "+ encodeURIComponent(document.getElementById("email").value)+
	" "+ encodeURIComponent(document.getElementById("noidung").value)
	" "+ encodeURIComponent(document.getElementById("mabaove").value);
	post('modules/testAjax.php','hienthi',poststr);


}


function search(page){
	poststr="data=search";
	keyword=document.getElementById("keyword").value;
	cat=document.getElementById("cat").value;
	post('index4.php?page='+page+'&keyword='+keyword+'&cat='+cat,'show_content',poststr);
}