function switchCell(m) {
  var style;
  document.getElementById("navcell1").className = "tab-off";
  document.getElementById("navcell2").className = "tab-off";
  document.getElementById("navcell3").className = "tab-off";
  document.getElementById("navcell4").className = "tab-off";
 document.getElementById("navcell5").className = "tab-off";
 document.getElementById("navcell6").className = "tab-off";
 document.getElementById("navcell7").className = "tab-off";
 document.getElementById("navcell8").className = "tab-off";
  document.getElementById("navcell" + m).className ="tab-on";
  
}
var xmlHttp
var xmlHttp1
var xmlHttp2
function showCustomer(str)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="getcustomer.asp";
url=url+"?q="+str;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChangedselect;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

function stateChangedselect() 
{ 
if (xmlHttp.readyState==1 || xmlHttp.readyState==2)
{ 
document.getElementById("txtHint").innerHTML='<div align=center><table  border="0"><tr><td><br><br><img src=./images/loading.gif boder=0 ><br><br><font face="arial" color="#0066b3" size="2" >Thông tin đang cập nhật...</font></td></tr></table></div>';

} 

  else
if (xmlHttp.readyState==4)
{ 
document.getElementById("txtHint").innerHTML=xmlHttp.responseText;
}
}
<!--Noi dung-->
function Customer(file)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url=""+file+"";

xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

function stateChanged() 
{ 
if (xmlHttp.readyState==1 || xmlHttp.readyState==2)
{ 
document.getElementById("dsDiv").innerHTML='<div align=center><table width=600   border="0"><tr><td align=center><br><br><img src=./images/loading.gif boder=0 ><br><br><font face="arial" color="#0066b3" size="2" >Thông tin đang cập nhật...</font></td></tr></table></div>';

} 

  else
if (xmlHttp.readyState==4)
{ 
document.getElementById("dsDiv").innerHTML=xmlHttp.responseText;

}
}
<!--Ket thuc noi dung-->
<!--Menu-->
function menu(file)
{ 
xmlHttp2=GetXmlHttpObject();
if (xmlHttp2==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 

var url=""+file+"";
xmlHttp2.onreadystatechange=stateChangedmenu;

xmlHttp2.open("GET",url,true);

xmlHttp2.send(null);
}

function stateChangedmenu() 
{ 
if (xmlHttp2.readyState==1 || xmlHttp2.readyState==2)
{ 
document.getElementById("menu").innerHTML='<div align=center><table  border="0"><tr><td><br><br><img src=../images/loading.gif boder=0 ><br><br><font face="arial" color="#0066b3" size="2" >Site is loading...</font></td></tr></table></div>';

} 

  else
if (xmlHttp2.readyState==4)
{ 
document.getElementById("menu").innerHTML=xmlHttp2.responseText;

}
}
<!--Ket thuc menu-->
<!--Cung nguoi dang-->
function same(file)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 

var url=""+file+"";
xmlHttp.onreadystatechange=stateChangesame;

xmlHttp.open("GET",url,true);

xmlHttp.send(null);
}

function stateChangesame() 
{ 
if (xmlHttp.readyState==1 || xmlHttp.readyState==2)
{ 
document.getElementById("same").innerHTML='<div align=center><table  border="0"><tr><td><br><br><img src=../images/loading.gif boder=0 ><br><br><font face="arial" color="#0066b3" size="2" >Site is loading...</font></td></tr></table></div>';

} 

  else
if (xmlHttp.readyState==4)
{ 
document.getElementById("same").innerHTML=xmlHttp.responseText;

}
}
<!--Ket thuc Cung nguoi dang-->
<!--Menu tin tuc-->
 function tintuc(file)
{ 
xmlHttp1=GetXmlHttpObject();
if (xmlHttp1==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 

var url=""+file+"";
xmlHttp1.onreadystatechange=stateChangetintuc;

xmlHttp1.open("GET",url,true);

xmlHttp1.send(null);
}

function stateChangetintuc() 
{ 
if (xmlHttp.readyState==1 || xmlHttp.readyState==2)
{ 
document.getElementById("tintuc").innerHTML='<div align=center><table  border="0"><tr><td><br><br><img src=../images/loading.gif boder=0 ><br><br><font face="arial" color="#0066b3" size="2" >Site is loading...</font></td></tr></table></div>';

} 

  else
if (xmlHttp1.readyState==4)
{ 
document.getElementById("tintuc").innerHTML=xmlHttp1.responseText;

}
}
<!--Ket thuc Menu tin tuc-->
function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}