var xmlHttp

function getBranches(str)
{
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	}
	var url="search_branches_ajax.php"
	url=url+"?category_id="+str
	//url=url+"&sid="+Math.random()
	xmlHttp.onreadystatechange=stateChanged
	xmlHttp.open("GET",url,true) 
	xmlHttp.send("")
}

function stateChanged()
{

	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{
//		alert(xmlHttp.responseText)
		document.getElementById("select_branch").innerHTML=xmlHttp.responseText
	}
}

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;
}