function qvnajax2(url,id,eval_str){
    if(document.getElementById){var x=(window.ActiveXObject)?new ActiveXObject("Microsoft.XMLHTTP"):new XMLHttpRequest();}
    if(x){x.onreadystatechange=function() {
		 document.getElementById(id+'_dangtai').innerHTML = '<div style="color: red; margin: 5px; padding: 2px 16px;"><img src="./thuvien/hinhanh/dangnap.gif" align="absmiddle"> Đang tải, xin đợi trong giây lát</div>';
        el=document.getElementById(id);
        if(x.readyState==4){
				if(x.status == 200) {
				document.getElementById(id+'_dangtai').innerHTML = '';
	            el=document.getElementById(id);
	            el.innerHTML=x.responseText;
	            eval(eval_str);
				} else {  
				document.getElementById(id+'_dangtai').innerHTML ='<div style=" color: red; margin: 10px; padding: 2px 20px;">Có lỗi xảy ra khi tải dữ liệu</div>';  
				return false;
				}
            }
        }
    x.open("GET",url,true);x.send(null);
    }
}
function hien_an(id) {
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
}

function formatCurrency(num) {
	num = num.toString().replace(/\$|\,/g,'');
	if(isNaN(num))
	num = "0";
	sign = (num == (num = Math.abs(num)));
	num = Math.floor(num*100+0.50000000001);
	cents = num%100;
	num = Math.floor(num/100).toString();
	if(cents<10)
	cents = "0" + cents;
	for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
	num = num.substring(0,num.length-(4*i+3))+','+
	num.substring(num.length-(4*i+3));
	return (((sign)?'':'-') + num);
}
function toggleChecked(oElement) 
{ 
  oForm = oElement.form; 
  oElement = oForm.elements[oElement.name]; 
  if(oElement.length) 
  { 
    bChecked = oElement[0].checked; 
    for(i = 1; i < oElement.length; i++) 
      oElement[i].checked = bChecked; 
  } 
} 

function toggleIndeterminate(oElement) 
{ 
  oForm = oElement.form; 
  oElement = oForm.elements[oElement.name]; 
  if(oElement.length) 
  { 
    bIndeterminate = false; 
    bChecked = true; 
    nChecked = 0; 
    for(i = 1; i < oElement.length; i++) 
      if(oElement[i].checked) 
        nChecked++; 
    if(nChecked < oElement.length - 1) 
    { 
      if(nChecked) 
        bIndeterminate = true; 
      else 
      { 
        bIndeterminate = false; 
        bChecked = false; 
      } 
    } 
    else 
    { 
      bIndeterminate = false; 
    } 
    oElement[0].indeterminate = bIndeterminate; 
    oElement[0].checked = bChecked; 
  } 
}