//var SITE_URL = 'http://localhost/learning/';
//var SITE_URL = 'http://79.117.149.167:81/learning/';

function relocate(url) {
  window.location = url;
}

function preloading() {
	for ( i = 0; i < preloading.arguments.length; i++ ) {
		my_images[i] = new Image();
		my_images[i].src = preloading.arguments[i];
	}
}

function checkEmail(email) {
  var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
  if ( !filter.test(email) ) {
    return false;
  } else {
    return true;
  }
}

function createCookie(name, value, days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires=" + date.toGMTString();
	} else {
    var expires = "";
  }

  document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');

	for(var i = 0; i < ca.length; i++) {
		var c = ca[i];
		while (c.charAt(0) == ' ') {
      c = c.substring(1,c.length);
    }

		if (c.indexOf(nameEQ) == 0) {
      return c.substring(nameEQ.length,c.length);
    }
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name, "", -1);
}

function trim(str, chars) {
	return ltrim(rtrim(str, chars), chars);
}

function ltrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}

function rtrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}

function track(id) {
  window.location = 'track-' + id;
}

function show_continent(continent) {
  //alert(continent);
  //globe_country
  for ( var i = 1; i <= 5; i++ ) {
    $('#continent_' + i).css('display', 'none');
  }

  $('#continent_' + continent).css('display', 'block');
  $('#globe_country').attr('src', 'images/continent_' + continent + '.gif');
}