var XMLHttpRequestObject = false; 

	if (window.XMLHttpRequest) {
		XMLHttpRequestObject = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
        XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
    }

	function getData(dataSource, divID) { 
		if(XMLHttpRequestObject) {
			var obj = document.getElementById(divID); 
			XMLHttpRequestObject.open("GET", dataSource); 

			XMLHttpRequestObject.onreadystatechange = function() { 
				if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) { 
					obj.innerHTML = XMLHttpRequestObject.responseText; 
				} 
			} 

			XMLHttpRequestObject.send(null); 
        }
    }

	function metropolis_change()
	{
		//"getData('includes/ajaxpages/top_ajax_content.ajax.php?id=13&menuid=1', 'ajaxTabBody')"
	var metropolis;
	metropolis=document.getElementById("metropolis").value;
	getData('includes/ajaxpages/get_city.ajax.php?m='+metropolis,'div_city');
	}