function centerDiv(div){
    // By www.iosmanetto.it
	// Author : Costa Gregorio
	// 11 gen 2010
	var DIVwidth = $(div).width();	
	var DIVheight = $(div).height();
	var SCREENwidth =  $(window).width();//$(document).width();
	var SCREENheight =  $(window).height();//$(document).height();	
	var SCREENscrolltop = $(window).scrollTop();
    $(div).hide();
	
	// MOD By ww.drbartstudio.it
	//07-05-2010
	if(DIVwidth<=SCREENwidth && DIVheight <=SCREENheight){
		$(div).css({"position":"absolute","left":(SCREENwidth-DIVwidth)/2+"px","top":(SCREENheight-DIVheight)/2+"px"});
	}
	
	else if(DIVwidth>SCREENwidth && DIVheight >SCREENheight){
		$(div).css({"position":"absolute","left":0+"px","top":0+"px"});
	}
	else {
		if(DIVheight>SCREENheight){
		$(div).css({"position":"absolute","left":(SCREENwidth-DIVwidth)/2+"px","top":0+"px"});}
		if(DIVwidth>SCREENwidth){
		$(div).css({"position":"absolute","left":0+"px","top":(SCREENheight-DIVheight)/2+"px"});}
	}
		
	$(div).show();
	
	}
	
	var div = "#corpo_pagina";
	$(document).ready(function(){
		centerDiv(div);
	});
	$(window).scroll(function(){
		centerDiv(div);
	});
	$(window).resize(function(){
		centerDiv(div);
	});