function doSearch()
{
  var xmlHttp;
  var output_box = document.getElementById('search_output');
  output_box.innerHTML = '<font size="2" color="#000000" face="Arial, Helvetica, sans-serif"><em>Loading...</em></font>';
  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)
    {
      output_box.innerHTML = xmlHttp.responseText;
    }
  }
  var stnumobj = document.getElementById('stnumber');
  var stnamobj = document.getElementById('stname');
  //var sttypobj = document.getElementById('sttype');

  var stnumval  = stnumobj.value;
  var stnameval = stnamobj.value;
  //var sttypeval = sttypobj.value;

  var d = new Date();
  var tmval = d.getTime();

  //if (stnumval != "" && stnameval != "" && sttypeval != "")
  if (stnumval != "" && stnameval != "")
  {
    //var search_url = "sched_search.php?stnumvar=" + stnumval + "&stnamvar=" + stnameval + "&sttypvar=" + sttypeval + "&tmvar=" + tmval;
    var search_url = "sched_search.php?stnumvar=" + stnumval + "&stnamvar=" + stnameval + "&tmvar=" + tmval;
    xmlHttp.open("GET",search_url,true);
    xmlHttp.send(null);
  }
  else
  {
    output_box.innerHTML = '<font size="3" color="#FF0000" face="Arial, Helvetica, sans-serif">All fields are required.</font>';
  }
}

function getStreetTypes()
{
  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 stTypesCombo = document.getElementById('st_types_combo');
      stTypesCombo.innerHTML = xmlHttp.responseText;
    }
  }
  var d = new Date();
  var tmval = d.getTime();

  xmlHttp.open("GET","get_st_types.php?tmvar=" + tmval,true);
  xmlHttp.send(null)
}