function ajaxload(item) {
	new Ajax.Request('ajax.'+ item +'.php', {
		onSuccess: function(transport) {
			$(item).innerHTML = transport.responseText;
		}
	});
}


function zoom(type, mapid, marktnr) {
	srcurl = $(mapid).src;
	params = srcurl.toQueryParams('&')
	radius = parseInt(params.radius);
	if (type == 'in') {
		radius = radius - 500;
	} else if (type == 'out') {
		radius = radius + 500;
	}
	
	$(mapid).src = 'http://www.obi.de/de/obi_vor_ort_include/mapOBImarket.php?radius='+ radius +'&width=459&height=250&marktnr='+ marktnr;
}