var http = createRequestObject();

function showteaser(gid) {

	 http.open('post', 'spieletest_teaser_anzeige.php');
     http.onreadystatechange = handleResponse;
     http.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	 http.send('gid='+gid);
}

function handleResponse() {
     if(http.readyState == 4){
          var teaser = http.responseText;
		  document.getElementById("teaser_spieletest").innerHTML = teaser;
     }
}