var user_agent 	= navigator.userAgent.toLowerCase();
var click_event = user_agent.match(/(iphone|ipod|ipad)/)  ? "touchend" : "click";  
var windowsize = $(window).width();

$( function() 
{
  function hasWebP() {
    var rv = $.Deferred(), img = new Image();
    img.onload = function() { rv.resolve(); };
    img.onerror = function() { rv.reject(); };
    img.src = "/libraries/webp.webp";
    return rv.promise();
  }

  hasWebP().then(function() {
    }, function() {
      $('body').addClass('nowebp');
      $( 'img' ).each( function()
      {
        if ( $( this ).attr( 'src-nowebp' ) )
          $( this ).attr( 'src', $( this ).attr( 'src-nowebp' ) );
      });
  });
});