function message(id)
{
	var xmlhttp;
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    document.getElementById("sendmessage").innerHTML=xmlhttp.responseText;
    }
  }
  if(typeof String.prototype.trim !== 'function') {
  String.prototype.trim = function() {
    return this.replace(/^\s+|\s+$/g, ''); 
  }
};
  var content = document.getElementById('content').value.trim();
  content = encodeURI(content);
xmlhttp.open("GET","sendmessage.php?id="+id+"&content="+content,true);
xmlhttp.send();
return false; 
}