$(function(){
	slideContent();
});



function slideContent(){
	var _holder = $('#main');
	var speed = 1000;
	var _opacity = 0.35;
	var _sidebar = _holder.find('#sidebar');
	var _content = _holder.find('#content');
	var _holderW = _holder.outerWidth();
	var _sidebarW = _sidebar.outerWidth();
	if($('#bg').length == 0) $('body').append('<div id="bg"></div>');
	var _bg = $('#bg');
	//qui cambi il numero di foto
	var randomnumber=Math.floor(Math.random()*5 + 1);
	var urlimage='url(images/bg-body'+randomnumber+'.jpg)';
	
	//alert(urlimage);
	_bg.css("background-image", urlimage
	); 
	//_bg.css({ "background-repeat", "no-repeat"); 
	if($('#overlay').length == 0) $('body').append('<div id="overlay"></div>');
	var _fader = $('#overlay');
	_fader.hide();
	_bg.css({height:initH()});
	_fader.css({
		height:initH(),
		opacity:0
	});
	$(window).resize(function(){
		_bg.css({height:initH()});
		_fader.css({height:initH()});
	})
	_content.css({marginLeft: -_holderW});
	_holder.css({marginLeft: -_sidebarW});
	$(window).load(function(){
		_holder.animate({marginLeft:0},{duration: speed, queue: false,complete:function(){
			setTimeout(function(){
				_content.animate({marginLeft:0},{duration: speed, queue: false,complete:function(){
					_fader.show().animate({opacity:_opacity},{duration: speed, queue: false}).css({height:initH()});
				}});
			},800);
		}});
	
	});
	function initH(){
		var _h = $('#main').outerHeight();
		if(_h < $(window).height()) _h = $(window).height();
		if(_h < $('body').height()) _h = $('body').height();
		return _h;
	}
}