// getCookie - cookie visszaolvasása
function getCookie(Name){
  var search = Name + "=";
  if (document.cookie.length > 0){
    offset = document.cookie.indexOf(search);
    if (offset != -1){
      offset += search.length;
      end = document.cookie.indexOf(";", offset);
      if (end == -1) end = document.cookie.length;
      return unescape(document.cookie.substring(offset, end));
    }
  }
}

function addEvent( obj, evType, fn ) {
  if ( obj.addEventListener ) {
    obj.addEventListener(evType, fn, true);
    return true;
  } else if ( obj.attachEvent ) {
    var r = obj.attachEvent( "on"+evType, fn );
    return r;
  } else {
    return false;
  }
}

function getWindowWidth() {
	var windowWidth = 0;
	if (typeof(window.innerWidth) == 'number') {
		windowWidth = window.innerWidth;
	}
	else {
		if (document.documentElement && document.documentElement.clientWidth) {
			windowWidth = document.documentElement.clientWidth;
		}
		else {
			if (document.body && document.body.clientWidth) {
				windowWidth = document.body.clientWidth;
			}
		}
	}
	return windowWidth;
}
function getWindowHeight() {
	var windowHeight = 0;
	if (typeof(window.innerHeight) == 'number') {
		windowHeight = window.innerHeight;
	}
	else {
		if (document.documentElement && document.documentElement.clientHeight) {
			windowHeight = document.documentElement.clientHeight;
		}
		else {
			if (document.body && document.body.clientHeight) {
				windowHeight = document.body.clientHeight;
			}
		}
	}
	return windowHeight;
}