function getSubject(reason_id){ 
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null){
	  alert ("Your browser does not support AJAX!");
	  return;
	} 
	var url="http://192.168.0.201/henryneff_dev/app/views/books/get_subject/"+reason_id;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

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;
}

function stateChanged(reason_id) { 
	if (reason_id==1){ 
		document.getElementById("subject").innerHTML=xmlHttp.responseText;
	}
}