// Allmänna ajaxfunktioner

function createRequest()
{
	var request = null;
	try {
		request = new XMLHttpRequest();
	}	catch (trymicrosoft) {
		try {
			request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (othermicrosoft) {
			try {
				request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (failed) {
				request = null;
			}
		}
	}
	
	if(request == null)
		alert("Error creating XMLHttpRequest!");
	else
		return request;
}

function ajaxSendRequest(obj,url,readystate,send) 
{
		obj.open("GET", url, true);
		obj.onreadystatechange = readystate;
		obj.send(send);
}

function CheckReadyState(obj)
{
	if( document.getElementById('loading') ) {
		if(obj.readyState == 0) { document.getElementById('loading').innerHTML = "Sending Request..."; }
		if(obj.readyState == 1) { document.getElementById('loading').innerHTML = "Loading..."; }
		if(obj.readyState == 2) { document.getElementById('loading').innerHTML = "Loading..."; }
		if(obj.readyState == 3) { document.getElementById('loading').innerHTML = "Loading..."; }
		if(obj.readyState == 4)
		{
			if(obj.status == 200)
			{
				document.getElementById('loading').innerHTML = "";
				return true;
			}
			else
			{
				document.getElementById('loading').innerHTML = "HTTP " + obj.status;
			}
		}
	}
}