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){
      var thisresult=xmlHttp.responseText;
      document.getElementById(inid).innerHTML=thisresult;
    }
  }        
  xmlHttp.open("GET","/"+infunction+"?"+field1+"="+value1+"&new="+Math.random,true);
  xmlHttp.send(null);
}

function isInteger(val)
{
    //alert(val.value);
    if(val==null)
    {
        alert(val);
        return false;
    }
    if (val.length==0)
    {
        alert(val);
        return false;
    }
    for (var i = 0; i < val.length; i++) 
    {
        var ch = val.charAt(i)
        if (i == 0 && ch == "-")
        {
            continue
        }
        if (ch < "0" || ch > "9")
        {
            return false
        }
    }
    return true
}