jQuery.fn.quickpaginate = function( settings ) {
settings = jQuery.extend({
perpage: 6,
pager : null,
showcounter : true,
prev : "qp_next",
next : "qp_prev",
pagenumber : "qp_pagenumber",
totalnumber : "qp_totalnumber",
counter : "qp_counter"
}, settings);
var cm;
var total;
var last = false;
var first = true;
var items = jQuery(this);
var nextbut;
var prevbut;
var init = function()
{
items.show();
total = items.size();
if ( items.size() > settings.perpage )
{
items.filter(":gt("+(settings.perpage-1)+")").hide();
cm = settings.perpage;
setNav();
}
};
var goNext = function()
{
if ( !last )
{
var nm = cm + settings.perpage;
items.hide();
items.slice( cm, nm ).show();
cm = nm;
if ( cm >= total )
{
last = true;
nextbut.addClass("qp_disabled");
}
if ( settings.showcounter ) settings.pager.find("."+settings.pagenumber).text(cm/settings.perpage);
prevbut.removeClass("qp_disabled");
first = false;
}
};
var goPrev = function()
{
if ( !first )
{
var nm = cm-settings.perpage;
items.hide();
items.slice( (nm - settings.perpage), nm ).show();
cm = nm;
if ( cm == settings.perpage )
{
first = true;
prevbut.addClass("qp_disabled");
}
if ( settings.showcounter ) settings.pager.find("."+settings.pagenumber).text(cm/settings.perpage);
nextbut.removeClass("qp_disabled");
last = false;
}
};
var setNav = function()
{
if ( settings.pager === null )
{
settings.pager = jQuery('<div class="qc_pager"></div>');
items.eq( items.size() -1 ).after(settings.pager);
}
var pagerNav = $('<a class="'+settings.prev+'" href="#">&laquo; indietro</a><a class="'+settings.next+'" href="#">avanti &raquo;</a>');
jQuery(settings.pager).append( pagerNav );
if ( settings.showcounter )
{
var counter = '<span class="'+settings.counter+'"><span class="'+settings.pagenumber+'"></span> / <span class="'+settings.totalnumber+'"></span></span>';
settings.pager.find("."+settings.prev).after( counter );
settings.pager.find("."+settings.pagenumber).text( 1 );
settings.pager.find("."+settings.totalnumber).text( Math.ceil(total / settings.perpage) );
}
nextbut = settings.pager.find("."+settings.next);
prevbut = settings.pager.find("."+settings.prev);
prevbut.addClass("qp_disabled");
nextbut.click(function(){
goNext();
return false;
});
prevbut.click(function(){
goPrev();
return false;
});
};
init();
}; 

$(
	function()
	{
		$("#lista_news li").quickpaginate({ perpage: 1, showcounter: true, pager : $("#lista_news_counter")});
	}
);