function hit(link_id) {
	if(window.XMLHttpRequest || window.ActiveXObject) {		
		if(link_id > 0) {
			if(window.XMLHttpRequest) {
				xml = new XMLHttpRequest();
			}
			else if(window.ActiveXObject) {
				xml = new ActiveXObject('Microsoft.XMLHTTP');
			}
		
			var boundary = 'cityfi69cityfi';
			
			var data  = '';
			data += '--'+boundary+'\r\n';
			data += 'Content-Disposition: form-data; name="id"\r\n\r\n';
			data += escape(link_id)+'\r\n';
			data += '--'+boundary+'--\r\n';
			
			xml.open('POST', '/yhteisot/linkit/click.php');
			xml.setRequestHeader('Content-Type', 'multipart/form-data; boundary=' + boundary);
			xml.send(data);
		}
	}
}