var MAXIMUM_WAITING_TIME = 10 * 1000;
var requestTimer;

//Top-level JS/Cookie/Connectivity checks
function makeRequest(url) {
    var httpRequest;

    if (window.XMLHttpRequest) { // Mozilla, Safari, ...
        httpRequest = new XMLHttpRequest();
        if (httpRequest.overrideMimeType) {
            httpRequest.overrideMimeType('text/json');
            // See note below about this line
        }
    } else if (window.ActiveXObject) { // IE
        try {
            httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
        } 
        catch (e) {
            try {
                httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
            } 
            catch (e) {}
        }
    }

    if (!httpRequest) {
        alert('Warning: This site requires an AJAX compliant browser, and no such functionality was available.');
        return false;
    }
    
    requestTimer = setTimeout(function() {
       httpRequest.abort();
       // Handle timeout situation, e.g. Retry or inform user.
       alert('Warning: Timeout communicating with server, please ensure your network configuration allows AJAX sites to function.');
    }, MAXIMUM_WAITING_TIME);
    
    httpRequest.onreadystatechange = function() { checkContents(httpRequest); };
    httpRequest.open('GET', url, true);
    httpRequest.send('');
}

function checkContents(httpRequest) {

    if (httpRequest.readyState == 4) {
        clearTimeout(requestTimer);
        if (httpRequest.status == 200) {
            var response = httpRequest.responseText;

            if (response.indexOf('false') == -1) {
                //we didn't get the expected value back'
                alert('Warning: Problem communicating with server, please ensure your network configuration allows AJAX sites to function.');
            }
        } else {
            alert('Warning: Problem communicating with server, please ensure your network configuration allows AJAX sites to function.');
        }
    }
}

//Make the actual request as soon as possible
makeRequest('/login/testaction');

function Set_Cookie( name, value, expires, path, domain, secure ) {
  // set time, it's in milliseconds
  var today = new Date();
  today.setTime( today.getTime() );

  /*
  if the expires variable is set, make the correct 
  expires time, the current script below will set 
  it for x number of days, to make it for hours, 
  delete * 24, for minutes, delete * 60 * 24
  */
  if ( expires )
  {
  expires = expires * 1000 * 60 * 60 * 24;
  }
  var expires_date = new Date( today.getTime() + (expires) );

  document.cookie = name + "=" +escape( value ) +
  ( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
  ( ( path ) ? ";path=" + path : "" ) + 
  ( ( domain ) ? ";domain=" + domain : "" ) +
  ( ( secure ) ? ";secure" : "" );
}

// this fixes an issue with the old method, ambiguous values 
// with this test document.cookie.indexOf( name + "=" );
function Get_Cookie( check_name ) {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f
	
	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );
		
		
		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');
	
		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 ) {
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}
function Delete_Cookie( name, path, domain ) {
    if ( Get_Cookie( name ) ) document.cookie = name + "=" +
    ( ( path ) ? ";path=" + path : "") +
    ( ( domain ) ? ";domain=" + domain : "" ) +
    ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}


//Check the cookies
Set_Cookie( 'test', 'none', '', '/', '', '' );
if ( Get_Cookie( 'test' ) ) {
	Delete_Cookie('test', '/', '');
} else {
	alert( 'Warning: Please enable cookies in your browser.' );
}