function slideSwitch() {

    var $active = $('#slideshow IMG.active');



    if ( $active.length == 0 ) $active = $('#slideshow IMG:last');



    var $next =  $active.next().length ? $active.next()

        : $('#slideshow IMG:first');



    $active.addClass('last-active');



    $next.css({opacity: 0.0})

        .addClass('active')

        .animate({opacity: 1.0}, 1000, function() {

            $active.removeClass('active last-active');

        });	



}



function use_fixed(){

	var isMSIE = /MSIE 6/i.test(navigator.userAgent);



	if(isMSIE) return false;

	

	var myWidth = 0, myHeight = 0;

	if( typeof( window.innerWidth ) == 'number' ) {//Non-IE

		myWidth = window.innerWidth;

		myHeight = window.innerHeight;

	} 

	else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {//IE 6+ in 'standards compliant mode'

		myWidth = document.documentElement.clientWidth;

		myHeight = document.documentElement.clientHeight;

	} 

	else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {//IE 4 compatible

		myWidth = document.body.clientWidth;

		myHeight = document.body.clientHeight;

	}

	return myHeight > 685;

}

function set_fixed() {

	document.getElementById('div_main_menu').style.position = use_fixed() ? 'fixed' : 'absolute';

}

window.onresize = set_fixed;



	

		

$(document).ready(function() {

	    

	$(".box_servizi").hide();

	$(function() {

		setInterval( "slideSwitch()", 8000 );

	});

	

	//$(".div_box_evidenza_homepage").css({opacity: 0});

	//$(".div_box_evidenza_homepage").animate({opacity: 0}, 800 ).animate({opacity: 1,}, 800 );

	

////	$(".div_header_menu").css({opacity: 0.8});

////(	$(".div_header_menu_cont").css({opacity: 0.6});

	

	////$(".div_header_menu_cont_homepage,.div_header_menu_homepage").css({opacity: 0.0});

	//$(".div_main_menu_homepage").animate({opacity: 0}, 200 ).animate({opacity: 1}, 800 );

	////$(".div_header_menu_homepage").animate({opacity: 0.0}, 100 ).animate({opacity: 0.8}, 1000 );

/////	$(".div_header_menu_cont_homepage").animate({opacity: 0.0}, 100 ).animate({opacity: 0.6}, 1000 );



});