var xmlHttp

function sendshout(str)
{ 
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null){
  alert ("Browser does not support HTTP Request")
  exit
}
  var url="sendshoutboxmsg.php"
  url=url+"?q="+str
  url=url+"&sid="+Math.random()
  xmlHttp.onreadystatechange=textboxloeschen 
  xmlHttp.open("GET",url,true)
  xmlHttp.send(null)
}

function textboxloeschen() { 
  if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){ 
    document.getElementById("nachricht").innerHTML="";
    document.getElementById("nachricht").value = "";
  } 
}

function GetXmlHttpObject(){
  var xmlHttp=null;
  try{
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
  }
  catch (e){
    //Internet Explorer
  try{
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e){
   xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
 }
}
return xmlHttp;
}