$(function() {  
$('a[href*=#]').click(function() {  
if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'')  
&& location.hostname == this.hostname) {  
var $target = $(this.hash);  
 $target = $target.length && $target  
|| $('[name=' + this.hash.slice(1) +']');  
if ($target.length) {  
var targetOffset = $target.offset().top - 20;  
$('html,body')  
.animate({scrollTop: targetOffset}, 1000);  
return false;  
}  
}  
});  
});