var xmlHttp;
function ajax_function(str)
{
//alert(str);
 xmlHttp=null;
xmlHttp=GetxmlHttp();
if(xmlHttp==null)
{
alert("your browser is not Support");
return;
}
var url="subcatagory.php";
//url=url+"?sid="+str;
url=url+"?parent_id="+str;
//alert(url);
xmlHttp.onreadystatechange=state;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);

}
function state()
{

if(xmlHttp.readyState =='4' || xmlHttp.readyState =='complete'){
	
	document.getElementById('q_model_span_id').innerHTML=xmlHttp.responseText;
	}
}
function GetxmlHttp()
{ 
  var xmlHttp=null;
try
{

xmlHttp = new XMLHttpRequest(); 
}
catch(e)
{
try
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP"); 
}
catch(e)
{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP"); 
}
}
return xmlHttp;
}