var base_url = document.location.href.substring(0, document.location.href.lastIndexOf("/") + 1);
var ajax_get_error = false;

function ajax_do (url) {

	if (url.substring(0, 4) != 'http') {
		url = base_url + url;
	}
	
	if(document.getElementById('ttdata')) {
		document.body.removeChild (document.getElementById('ttdata'));
	}

	var jsel = document.createElement('SCRIPT');
	jsel.type = 'text/javascript';
	jsel.id = "ttdata";
	jsel.src = url;
	document.body.appendChild (jsel);

	return true;
}

function ajax_get (itemid, el) {
	if (typeof(el) == 'string') {
		el = document.getElementById(el);
	}

	if (el == null) {
		return false;
	}

	if(document.getElementById(itemid) == null) {
		getfile_url = 'http://www.nsk.de/getdata.php?itemid=' + escape(itemid) + '&el=' + escape(el.id);
		ajax_do (getfile_url);
	}
	else {
		el.innerHTML = document.getElementById(itemid).innerHTML;
	}
	
	return true;
}