var ie4 = document.all;
var ns6 = document.getElementById&&!document.all;

function clickreturnvalue() {
	if (ie4||ns6)
		return false
	else
		return true
}





function lavHTTP() {
	var http_request = false;

	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('application/xml');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}

	if (!http_request) {
		return false;
	}
	
	return http_request;
}








function hentBil(bil) {
	var http_request = lavHTTP();
	http_request.onreadystatechange = function() { skrivBil(http_request, bil); };
	http_request.open('GET', '/biler.php?bil='+escape(bil), true);
	http_request.setRequestHeader('Accept','message/x-jl-formresult');
	document.getElementById('henter').style.visibility = 'visible';
	http_request.send(null);
	
	return clickreturnvalue();
}


function skrivBil(http_request, bil) {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			document.getElementById('bilinfo').innerHTML = http_request.responseText;
			document.getElementById('henter').style.visibility = 'hidden';
			return true;
		} else {
			window.location = '?biler&bil='+bil;
			return false;
		}
	}
}