<!-- ROLLOVER MENU -->
jQuery(document).ready(function(){

jQuery("#sitemenu li").find("img").animate({opacity: 0, duration:10});

	jQuery("#sitemenu li").hover(
		function(){
			jQuery(this).find("img").animate({opacity: 1}, {queue:false, duration:400});
					}, 
		function(){
			jQuery(this).find("img").animate({opacity: 0}, {queue:false, duration:400});
		});
});

<!-- FIX SIDEBAR -->
$(function () {
  
  var msie6 = $.browser == 'msie' && $.browser.version < 7;
  
  if (!msie6) {
 
    $(window).scroll(function () {
      // what the y position of the scroll is
    var y = $(this).scrollTop();
	var finestraW = $(this).width();
	var finestraH = $(this).height();
	var altezza = $("#sidebar-placeholder").height();
	var header = $("#headwrap").height() + $("#sitemenu-wrap").height();
//  se la finestra è piu grande del menu + header blocca tutto 
//	if((finestraW > 960) && (finestraH > 840 )){
	if((finestraW > 960) && (finestraH > 560 )){

		$( "#headwrap" ).addClass( "headwrap-fixed-up" );
		$( ".headwrap-fixed-up" ).css("left", finestraW/2-480+"px");
		$( "#sitemenu-wrap" ).addClass( "sitemenu-fixed-up" );
		$( "#wrapper" ).css("padding-top", 118+"px");
		$( "#sidebar" ).addClass( "sidebar-fixed-up" );
		$( ".sidebar-fixed-up" ).css("left", finestraW/2-480+750+"px");
		
		
//	}else if((finestraW < 960) || (finestraH < 840 )) {
	}else if((finestraW < 960) || (finestraH < 560 )) {
		
		$( "#headwrap" ).removeClass( "headwrap-fixed-up" );
		$( "#sitemenu-wrap" ).removeClass( "sitemenu-fixed-up" );
		$('#sidebar').removeClass( "sidebar-fixed-up" );
		$( "#wrapper" ).css("padding-top", 0+"px");

		if (( y > 560-finestraH) && (finestraW > 960) ){		
//		if (( y > 840-finestraH) && (finestraW > 960) ){
			$( "#sidebar" ).addClass( "sidebar-fixed-up2" );
			$( ".sidebar-fixed-up2" ).css("left", finestraW/2-480+750+"px");
			$( ".sidebar-fixed-up2" ).css("top", 180+"px");
//			$( ".sidebar-fixed-up2" ).css("bottom", 30+"px");
		} else {
			$('#sidebar').removeClass( "sidebar-fixed-up2" );
		}
		
      }			
});

    $(window).resize(function () {
      // what the y position of the scroll is
    var y = $(this).scrollTop();
	var finestraW = $(this).width();
	var finestraH = $(this).height();
	var altezza = $("#sidebar-placeholder").height();
	var header = $("#headwrap").height() + $("#sitemenu-wrap").height();
	
//	alert(header);
//  se la finestra è piu grande del menu + header blocca tutto 
//	if((finestraW > 960) && (finestraH > 840 )){
	if((finestraW > 960) && (finestraH > 560 )){

		$( "#headwrap" ).addClass( "headwrap-fixed-up" );
		$( ".headwrap-fixed-up" ).css("left", finestraW/2-480+"px");
		$( "#sitemenu-wrap" ).addClass( "sitemenu-fixed-up" );
		$( "#wrapper" ).css("padding-top", 118+"px");
		$( "#sidebar" ).addClass( "sidebar-fixed-up" );
		$( ".sidebar-fixed-up" ).css("left", finestraW/2-480+750+"px");
		
		
//	}else if((finestraW < 960) || (finestraH < 840 )) {
	}else if((finestraW < 960) || (finestraH < 560 )) {
		
		$( "#headwrap" ).removeClass( "headwrap-fixed-up" );
		$( "#sitemenu-wrap" ).removeClass( "sitemenu-fixed-up" );
		$('#sidebar').removeClass( "sidebar-fixed-up" );
		$( "#wrapper" ).css("padding-top", 0+"px");

		if (( y > 560-finestraH) && (finestraW > 960) ){		
//		if (( y > 840-finestraH) && (finestraW > 960) ){
			$( "#sidebar" ).addClass( "sidebar-fixed-up2" );
			$( ".sidebar-fixed-up2" ).css("left", finestraW/2-480+750+"px");
	//		$( ".sidebar-fixed-up2" ).css("bottom", 30+"px");
			$( ".sidebar-fixed-up2" ).css("top", 180+"px");

		} else {
			$('#sidebar').removeClass( "sidebar-fixed-up2" );
		}
		
      }			
});


  }  
});