var http = createRequestObject();
var vote;
var trendid;

function getValue() {
 	
	for (i=0;i<document.trend.optionen.length;i++) {
    
		if (document.trend.optionen[i].checked) {
      	vote=document.trend.optionen[i].value;
	  	}
	 
	 trendid = document.trend.trendid.value;
	 }

	//alert(vote);
	
	if (vote){
	
	 http.open('post', 'trend_auswertung.php');
     http.onreadystatechange = handleResponse;
     http.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	 http.send('trendid='+trendid+'&votevalue='+vote);
}
}



function handleResponse() {
     if(http.readyState == 4){
          var votevalue = http.responseText;
          //alert(votevalue);
		  document.getElementById("eintrag_trend").innerHTML = votevalue;
     }
}