var xmlhttp;

function validate_required(field,alerttxt)
{
with (field)
 {
 if (value==null||value=="")
 {
 alert(alerttxt);return false;
 }
 else
 {
 return true;
 }
 }
}

function validate_form(thisform)
{
with (thisform)
 {
 if (validate_required(state,"Please choose a state in Step 1")==false)
 {return false;}
 if (validate_required(county,"Please choose a county in Step 2")==false)
 {return false;}
 }
}


function showSelection(str)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
var url="/index/providers/getCounties.php";
url=url+"?state="+str;
url=url+"&sid="+Math.random();
xmlhttp.onreadystatechange=stateChanged;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}

function stateChanged()
{
if (xmlhttp.readyState==4)
{
document.getElementById("countiesSelect").innerHTML=xmlhttp.responseText;
}
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}