function cambiaLingua() {
	$("#selezionaLingua").hide();
	$("#listaLingua").show();
}

function launchWindow(id) {
        
    //Get the screen height and width
    var maskHeight = $(document).height();
    var maskWidth = $(window).width();
        
	//Set heigth and width to mask to fill up the whole screen
	$('#mask').css({'width':maskWidth,'height':maskHeight});
            
	//transition effect		
	$('#mask').fadeIn(1000);	
	$('#mask').fadeTo("slow",0.8);	
        
	//Get the window height and width
	var winH = $(window).height();
	var winW = $(window).width();
                  
	//Set the popup window to center
	$(id).css('top',  '50%');
	$(id).css('left', '50%');
	$(id).css('margin-top',  -($(id).height()/2));
	$(id).css('margin-left', -($(id).width()/2));
				
	//transition effect
	$(id).fadeIn(2000); 
}

function resize() {
	var maskHeight = $(document).height();
	var maskWidth = $(window).width();
		
	//Set heigth and width to mask to fill up the whole screen
	$('#mask').css({'width':maskWidth,'height':maskHeight});
}