var xmlHttp
var browser=navigator.appName;
function goReturn(e) 
{
	var getEvent=e.keyCode;
	if (getEvent == "13")
	 {
		rate_listing('');
	}
}

function rate_listing(dis_all)
{
	var srchval="";
	if(dis_all=='')	
	{
		 var srchobj=document.getElementById('srch_rec');
		 srchval=srchobj.value;
		
		 if(srchval=='')	
		 {
			alert('Enter Zip Code or City.');
			srchobj.focus();
			return false;
		}
		/*else if(isNaN(srchval) || srchval.length !=5)
		{
				alert('Enter only five digit numeric zip code.');
				
				srchobj.focus();
				return false;
		}*/
	
	}

xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
//Send request to server
var url="scripts/ajax.php";
url=url+"?sid="+Math.random()+"&zipcode="+srchval;

xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
} 

function stateChanged() 
{ 
	if (xmlHttp.readyState==4)
	{ 
		if(xmlHttp.status==200)
		{

			document.getElementById("rate_list").innerHTML=xmlHttp.responseText;		
		}
		else
		{
  			 alert("An error has occured making the request")
   		}
	}
	else
	{
		document.getElementById("rate_list").innerHTML='<img src="scripts/ajax.gif" alt="preload" />';
	}
}

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;
}