////////////////////////////////////////////////
// Paralax Scrolling
////////////////////////////////////////////////

var isMobile;

// Identify if visitor on mobile with lame sniffing to remove parallaxing title
if( navigator.userAgent.match(/Android/i) ||
    navigator.userAgent.match(/webOS/i) ||
    navigator.userAgent.match(/iPhone/i) ||
    navigator.userAgent.match(/iPod/i) ||
    navigator.userAgent.match(/iPad/i) ||
    navigator.userAgent.match(/BlackBerry/)
){
  isMobile = true;
}

$(document).ready(function() {

  // Global vars
  var $artHeader = $('div.postImage div');
  var $artTitle = $('.art-title');
  var $artSubtitle = $('.art-subtitle');
  var $artTime = $('.art-time');
  var $nav = $('.nav');
  var windowScroll;



  // Identify if visitor has a large enough viewport for parallaxing title
  function isLargeViewport() {
    if($nav.css('position') == "relative") {
      return false;
    } else {
      return true;
    }
  }

  // If large viewport and not mobile, parallax the title
  if(!isMobile) {
    $(window).scroll(function() {
      if(isLargeViewport()) {
        slidingTitle();
      }
    });
  }

  // Window gets large enough, need to recalc all parallaxing title values
  $(window).resize(function() {
    if(isLargeViewport()) {
      slidingTitle();
    }
  });

  // Functional parallaxing calculations
  function slidingTitle() {
    //Get scroll position of window
    windowScroll = $(this).scrollTop();

    //Slowly parallax the background of .art-header
    $artHeader.css({
      'background-position' : 'center ' + (-windowScroll/8)+"px"
    });

  }

});

////////////////////////////////////////////////
// Navigation
////////////////////////////////////////////////
	
	// Run Matt Kersley's jQuery Responsive menu plugin (see plugins.js)
	if ($.fn.mobileMenu) {
		$('nav ol').mobileMenu({
			switchWidth: 767,                   // width (in px to switch at)
			topOptionText: 'Vælg en side',     // first option text
			indentString: '   '  // string for indenting nested items
		});
	}

	// Run Mathias Bynens jQuery placeholder plugin (see plugins.js)
	if ($.fn.placeholder) {
		$('input, textarea').placeholder();		
	}