var SUCCESS_LOGIN = "SUCCESS";

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function handleEnter(e)
{
	var key;

	if(window.event)
	{
		key = window.event.keyCode;
	} else
	{
		key = e.which;
	}
	if (key == 13)
	{
		appLogin();
	}
}

function createRequestObject()
	{
		var ro;
		if (window.XMLHttpRequest)
		{
			ro = new XMLHttpRequest();
		} else
		{
			ro = new ActiveXObject('Msxml2.XMLHTTP');
			if(!ro)
			{
				ro = new ActiveXObject('Microsoft.XMLHTTP');
			}
		}
		return ro;
	}

	function sendAJAXRequest(url, parameters, method, handleResponse)
	{
		http = createRequestObject();
		http.onreadystatechange = handleResponse;

		if (method == "GET")
		{
			http.open('GET', url + "?" + parameters, true);
			http.send(null);
		}
		else if(method == "POST")
		{
			http.open('POST', url, true);
			http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
			http.setRequestHeader("Content-length", parameters.length);
			http.setRequestHeader("Connection", "close");
			http.send(parameters);
		}
	}

  function appLogin()
	{
    document.getElementById('login_status').innerHTML = "Logging in...";
		var params = encodeURI("timeid=" + (new Date()).getTime() + "&ajax_req=true&top_userid=" + document.form_login.top_userid.value + "&top_password=" + document.form_login.top_password.value);
		sendAJAXRequest("/Login.aspx", params, "POST", handleServerResponse);
	}

	function handleServerResponse()
	{
		if(http.readyState == 4)
		{
			var t = http.responseText;
			if( t != SUCCESS_LOGIN)
			{
				document.getElementById('login_status').innerHTML = "<span class='errors'>" + t + "</span>";
			} else
			{
				window.location = "/MyArea.aspx";
			}
		}
	}

  function allowOnlyNumbers(vl)
	{
		vl.value = vl.value.replace(/[^0-9]/g, "");
	}

  function allowOnlyLetters(vl)
	{
		vl.value = vl.value.replace(/[^a-zA-Z]/g, "");
	}