function verify_login()
{
    valid = true;
    if ( document.login.username.value == "" )
    {
        alert ( "A username is required." );
        valid = false;
		return false;
    }
	if ( document.login.password.value == "" )
    {
        alert ( "A password is required" );
        valid = false;
		return false;
    }

	
	username = document.login.username.value;
	password = document.login.password.value;
	
	check_login(username,password)	
	
    return valid;
}

function check_login(username,password)
{
	
	xmlHttp3=GetXmlHttpObject()
		if (xmlHttp3==null)
 		{
 			alert ("Browser does not support HTTP Request")
 			return
 		}
 	var url="../js/set_cookie.php"
	url=url+"?username="+username+"&password="+password
	url=url+"&sid="+Math.random()
	xmlHttp3.onreadystatechange=stateChanged3 
	xmlHttp3.open("GET",url,true)
	xmlHttp3.send(null)
}

function stateChanged3() 
{ 
if (xmlHttp3.readyState==4 || xmlHttp3.readyState=="complete")
 { 
 //document.getElementById("email_verify").innerHTML=
 alert(xmlHttp3.responseText) 
 } 
}

function GetXmlHttpObject()
{
var xmlHttp3=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp3=new XMLHttpRequest();
 }
catch (e)
 {
 //Internet Explorer
 try
  {
  xmlHttp3=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp3=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp3;
}