function mahnivalue(sender, default_value, change_value)
{
		if (sender.value == default_value) sender.value = change_value;
	}
	function decision(message, url){

if(confirm(message)) {
location.href = url;
}

}

function Inint_AJAX() {
try { return new ActiveXObject("Msxml2.XMLHTTP");  } catch(e) {}
try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {}
try { return new XMLHttpRequest();          } catch(e) {}
alert("XMLHttpRequest not supported");
return null;
};

function dochange(src, val) {
var req = Inint_AJAX();
req.onreadystatechange = function () {
 if (req.readyState==4) {
      if (req.status==200) {
           document.getElementById(src).innerHTML=req.responseText;
      }

 }
};

req.open("GET", "includes/ajax.php?mid="+val+"&src="+src); 

req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
req.send(null);
}

window.onLoad=dochange('sub_cat', -1);