var xmlHttp
function showState(str)
{ 
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var url="yr.php"
url=url+"?st="+str
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged2
xmlHttp.open("GET",url,true)
xmlHttp.send(null)

}

function showYear(num)
{ 
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var state_list=document.getElementById("state_list")
var state=state_list.options[state_list.selectedIndex].value
var year1_list=document.getElementById("year1_list")
var year1=year1_list.options[year1_list.selectedIndex].value


var url="fema.php"
url=url+"?st="+state
url=url+"&yr1="+year1
url=url+"&yr2="+num
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged
xmlHttp.open("GET",url,true)
xmlHttp.send(null)

}


function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById("txtHint").innerHTML=xmlHttp.responseText 
 } 
}

function stateChanged2() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById("yrHint").innerHTML=xmlHttp.responseText 
 } 
}

function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 //Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}

function validate(list)
{
var valid=false
var state_list=document.getElementById("state_list")
var state=state_list.options[state_list.selectedIndex].value
var year1_list=document.getElementById("year1_list")
var year1=year1_list.options[year1_list.selectedIndex].value
var year2_list=document.getElementById("year2_list")
var year2=year2_list.options[year2_list.selectedIndex].value
var fema_list=document.getElementById("fema_list")
var fema=fema_list.options[fema_list.selectedIndex].value
if (state == null){
	alert("Please select a state.");
	valid=false;
	return valid;
}
else if (year1 == null){
	alert("Please select a start year.");
	valid=false;
	return valid;
}
else if (year2 == null){
	alert("Please select a start year.");
	valid=false;
	return valid;
}
else if (year1 > year2){
	alert("Start year should be smaller than end year.");
	valid=false;
	return valid;
}
else if (fema == null){
	alert("Please select FEMA Disaster No. with description.");
	valid=false;
	return valid;
}
else{
	valid=true;
	return valid;
}
}