// JavaScript Document
var xmlHttp;
// User Id and Password Verification at login
function user_verification() {
	xmlHttp=GetXmlHttpObject()
    if (xmlHttp==null)
		{
		alert ("Your browser does not support AJAX!");
		return;
		}
	var url="form_process/user_verification.php";
	url += "?username="+document.getElementById('username').value;
	url += "&password="+document.getElementById('pass').value;
	xmlHttp.onreadystatechange=stateChanged_user_verification;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function stateChanged_user_verification()
{
	if (xmlHttp.readyState==4)
	{
		response_array = Array();
		response_array = xmlHttp.responseText.split('@$');
		if(response_array[0]=='Invalid login details.'||response_array[0]=='Your account has been locked.') {
			document.getElementById('success_response').style.display='block';
			document.getElementById("success_response").innerHTML = response_array[0];
			document.getElementById("pass").value = '';
		}
		else if(response_array[0]=='1') {
			location.href = response_array[1];
		}
			
	}
}

function GetXmlHttpObject(){var xmlHttp=null;try  {  xmlHttp=new XMLHttpRequest();  }catch (e)  {  try    {    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");    }  catch (e)    {    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");    }  }return xmlHttp;}

function validate_login(){
var error = 0;
   if(document.getElementById('username').value==''){
        document.getElementById('user_error').style.display='block';
        document.getElementById('user_error').innerHTML="Please Enter User Name";
		error = error+1;
   }
   else{
   		document.getElementById('user_error').style.display='none';
   }
   if(document.getElementById('pass').value==''){
		document.getElementById('pass_error').style.display='block';
		document.getElementById('pass_error').innerHTML="Please Enter Password";
   		error = error+1;
   }
   else{
   		document.getElementById('pass_error').style.display='none';
   }
   
	 if(error>0){
		return false;
	 }
	 else{
	   	user_verification();
	 }
  }