function getAjax(inid, infunction,field1, value1){
  var xmlHttp;
  try{
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();    
    }
  catch (e){
    // Internet Explorer
    try{
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch (e){
      try{
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
      catch (e){
        alert("Your browser does not support AJAX!");
        return false;
      }
    }
  }                   
  
  xmlHttp.onreadystatechange=function(){
    if(xmlHttp.readyState==4){
      document.getElementById(inid).innerHTML=xmlHttp.responseText;             
    }
  }        
  xmlHttp.open("GET",infunction+"?"+field1+"="+value1+"&new="+Math.random,true);
  xmlHttp.send(null);
}

function checkSingle(divid, message){
  if (document.getElementById(divid).value==""){
    alert(message);
    document.getElementById(divid).focus();
    return (false);
  }
}