(function ($) {
	

	
	$(document).ready(function() {
		
		var sticky = $('#sidebar-left .sticky');
		var static = $('#sidebar-left .static');
		
		var offset = sticky.offset();
		var footer = $('#footer');
  	var offset_footer = $('#footer').offset();
  			
		var isWindows=navigator.userAgent.match(/(Windows)/i);
		
		if(isWindows){
			$('body').addClass('windows');
		}
		
		
		$(window).scroll(function () {
			if(offset){  
   			var scrollTop = $(window).scrollTop(); // check the visible top of the browser  
			
   			if (offset.top<scrollTop) sticky.addClass('letsgo');  
   			else sticky.removeClass('letsgo');
   		
   			if((sticky.position().top + sticky.height()) > offset_footer.top){
   					sticky.addClass('ok-now-dive');
   				}
   			else sticky.removeClass('ok-now-dive');
   		}
  	});


  });
 
})(jQuery);;