jQuery.fn.pager = function(options){
	options = jQuery.extend({
		amount:0, // 总数量
		allNo:0, // 总页数
		pageNo:0, // 当前页数
		pageSize:0, // 页大小
		callback:function(n) {}
	},options||{});

	$(this).html('\
<div class="pagination_font" id="page_info">共有0条记录/每页0条</div>\
	<div class="page_num">\
	<div class="l_arrow"><a id="page_pre"><img src="/images/fenye_no_left_arrow.gif" width="26" height="22" style="cursor:pointer;" /></a></div>\
	<div class="number" id="page_no">0</div>\
	<div class="r_arrow"><a id="page_next"><img src="/images/fenye_no_right_arrow.gif" width="32" height="34" style="cursor:pointer;" /></a></div><span class="page_goto" style="display:none;">跳转到此页<input value="" type="text" /><em>go</em></span>\
</div>');

	$("#page_info", $(this)).html('共有' + options.amount + '条记录/每页' + options.pageSize + '条');

	var no = '';
	if (options.pageNo == 1) {
		no += '<span class="span">' + options.pageNo + '</span>';
	} else if (options.pageNo == 2) {
		no += '<a>1</a>,<span class="span">' + options.pageNo + '</span>';
	} else if (options.pageNo == 3) {
		no += '<a>1</a>,<a>2</a>,<span class="span">' + options.pageNo + '</span>';
	} else if (options.pageNo == 4) {
		no += '<a>1</a>,<a>2</a>,<a>3</a>,<span class="span">' + options.pageNo + '</span>';
	} else if (options.pageNo > 4) {
		no += '<a>1</a>...<a>' + (parseInt(options.pageNo) - 2) + '</a>,<a>' + (parseInt(options.pageNo) - 1) + '</a>,<span class="span">' + options.pageNo + '</span>';
	}
	if (options.pageNo == options.allNo - 1) {
		no += ',' + '<a>' + options.allNo + '</a>';
	} else if (options.pageNo == options.allNo - 2) {
		no += ',' + '<a>' + (parseInt(options.pageNo) + 1) + '</a>,<a>' + options.allNo + '</a>';
	} else if (options.pageNo == options.allNo - 3) {
		no += ',' + '<a>' + (parseInt(options.pageNo) + 1) + '</a>,<a>' + (parseInt(options.pageNo) + 2) + '</a>,<a>' + options.allNo + '</a>';
	} else if (options.pageNo < options.allNo - 3) {
		no += ',' + '<a>' + (parseInt(options.pageNo) + 1) + '</a>,<a>' + (parseInt(options.pageNo) + 2) + '</a>...<a>' + options.allNo + '</a>';
	}
	$("#page_no", $(this)).html(no);
	$("a", $("#page_no", $(this))).each(function () {
		$(this).click(function() {
			options.callback($(this).text());
		});
	});

	if (options.pageNo > 1) {
		$("#page_pre", $(this)).click(function () {options.callback(((options.pageNo > 1)?(options.pageNo - 1):(1)));});
		$('img', $('#page_pre', $(this))).attr('src', '/images/fenye_left_arrow.gif');
	} else {
		$('img', $('#page_pre', $(this))).attr('src', '/images/fenye_no_left_arrow.gif');
	}
	if (options.pageNo < options.allNo) {
		$("#page_next", $(this)).click(function () {options.callback(((options.pageNo < options.allNo)?(options.pageNo + 1):(options.allNo)));});
		$('img', $('#page_next', $(this))).attr('src', '/images/fenye_right_arrow.gif');
	} else {
		$('img', $('#page_next', $(this))).attr('src', '/images/fenye_no_right_arrow.gif');
	}

	return $(this);
};