$(document).ready(
    function() {
	    $('#portfolio').innerfade({
	        animationtype: 'fade',
	        speed: 4000,
	        timeout: 6000,
	        type: 'sequence',
	        containerheight: 'auto'
	    });
    }
);

    function skipDiv(wich) {
        var homeDiv = document.getElementById('contentHome');
        var contactsDiv = document.getElementById('contentContacts');
        var aboutDiv = document.getElementById('contentAbout');
        var altezza = window.screen.height;
        
        if (wich == "start") {
            if (altezza >= 600) {
                document.getElementById('footer').style.position = "absolute";
            } else {
                document.getElementById('footer').style.position = "relative";
            }
        }
        if ((wich.id == "buttonHome")||(wich == "home")) {
            homeDiv.style.display = "block";
            document.getElementById('buttonHome').style.color = "#333333";
            contactsDiv.style.display = "none";
            document.getElementById('buttonContacts').style.color = "";
            aboutDiv.style.display = "none";
            document.getElementById('buttonAbout').style.color = "";
            document.getElementById('thumbs').style.height = "auto";
            if (altezza >= 600) {
                document.getElementById('footer').style.position = "absolute";
            } else {
                document.getElementById('footer').style.position = "relative";
            }
        } else if ((wich.id == "buttonContacts") || (wich == "contacts")) {
            homeDiv.style.display = "none";
            document.getElementById('buttonHome').style.color = "";
            contactsDiv.style.display = "block";
            document.getElementById('buttonContacts').style.color = "#333333";
            aboutDiv.style.display = "none";
            document.getElementById('buttonAbout').style.color = "";
            document.getElementById('thumbs').style.height = "auto";
            if (altezza >= 600) {
                document.getElementById('footer').style.position = "absolute";
            } else {
                document.getElementById('footer').style.position = "relative";
            }
        } else if ((wich.id == "buttonAbout") || (wich == "about")) {
            homeDiv.style.display = "none";
            document.getElementById('buttonHome').style.color = "";
            contactsDiv.style.display = "none";
            document.getElementById('buttonContacts').style.color = "";
            aboutDiv.style.display = "block";
            document.getElementById('buttonAbout').style.color = "#333333";
            document.getElementById('thumbs').style.height = "400px";
            document.getElementById('footer').style.position = "relative";
        }
    }