/// <reference path="jquery-1.2.6.js" />
<!--
/*

showPages v1.1
=================================

Infomation
----------------------
Author : Lapuasi
E-Mail : lapuasi@gmail.com
Web : http://www.lapuasi.com
Date : 2005-11-17


Example
----------------------
var pg = new showPages('pg');
pg.pageCount = 12; //定义总页数(必要)
pg.argName = 'p';    //定义参数名(可选,缺省为page)
pg.printHtml();        //显示页数


Supported in Internet Explorer, Mozilla Firefox
*/
//$.fn.showPages=function(name,settings)
//{
    //var defaults={
	    //name:'pg',      //对象名称
	    //page:1,         //当前页数
	    //pageCount:1,    //总页数
	    //argName:'page', //参数名
	    //showTimes: 1    //打印次数
	//};
    //$.extend(defaults,settings);
    //printHtml();
var page=1;
var pageCount=1;
var argName='page';
function showPages(pageCount) { //初始化属性
	this.pageCount = pageCount;    //总页数
	this.argName = 'page'; //参数名
	this.showTimes = 1;    //打印次数
}


    function getPage(){ //丛url获得当前页数,如果变量重复只获取最后一个
	var args = location.search;
	var reg = new RegExp('[\?&]?' + argName + '=([^&]*)[&$]?', 'gi');
	var chk = args.match(reg);
	this.page = RegExp.$1;
}
function checkPages(){ //进行当前页数和总页数的验证
	if (isNaN(parseInt(page))) page = 1;
	if (isNaN(parseInt(pageCount))) pageCount = 1;
	if (page < 1) page = 1;
	if (pageCount < 1) pageCount = 1;
	if (page > pageCount) page = pageCount;
	page = parseInt(page);
	pageCount = parseInt(pageCount);
}
function createHtml(mode){ //生成html代码
	var strHtml = '', prevPage = page - 1, nextPage = page + 1;
	if (mode == '' || typeof(mode) == 'undefined') mode = 0;

			//strHtml += '<span class="count">Pages: ' + page + ' / ' + pageCount + '</span>';
			strHtml += '<span class="number">';
			if (prevPage < 1) {
				strHtml += '<span title="First Page" class="prev">首页</span>';
				strHtml += '<span title="Prev Page" class="prev">上一页</span>';
			} else {
				strHtml += '<span title="First Page"><a href="javascript:toPage(1);" class="prevlink">首页</a></span>';
				strHtml += '<span title="Prev Page"><a href="javascript:toPage(' + prevPage + ');" class="prevlink">上一页</a></span>';
			}
			if (page != 1) strHtml += '<span title="Page 1"><a href="javascript:toPage(1);">1</a></span>';
			if (page >= 5) strHtml += '<span>...</span>';
			if (pageCount > page + 2) {
				var endPage = page + 2;
			} else {
				var endPage = pageCount;
			}
			for (var i = page - 2; i <= endPage; i++) {
				if (i > 0) {
					if (i == page) {
						strHtml += '<span title="Page ' + i + '" class=\"current\">' + i + '</span>';
					} else {
						if (i != 1 && i != pageCount) {
							strHtml += '<span title="Page ' + i + '"><a href="javascript:toPage(' + i + ');">' + i + '</a></span>';
						}
					}
				}
			}
			if (page + 3 < pageCount) strHtml += '<span>...</span>';
			if (page != pageCount) strHtml += '<span title="Page ' + pageCount + '"><a href="javascript:toPage(' + pageCount + ');">' + pageCount + '</a></span>';
			if (nextPage > pageCount) {
				strHtml += '<span title="Next Page" class="next">下一页</span>';
				strHtml += '<span title="Last Page" class="next">尾页</span>';
			} else {
				strHtml += '<span title="Next Page"><a href="javascript:toPage(' + nextPage + ');" class="nextlink">下一页</a></span>';
				strHtml += '<span title="Last Page"><a href="javascript:toPage(' + pageCount + ');" class="nextlink">尾页</a></span>';
			}
			strHtml += '</span>';
	return strHtml;
}
function createUrl(page) { //生成页面跳转url
	if (isNaN(parseInt(page))) page = 1;
	if (page < 1) page = 1;
	if (page > pageCount) page = pageCount;
	var url = location.protocol + '//' + location.host + location.pathname;
	var args = location.search;
	var reg = new RegExp('([\?&]?)' + argName + '=[^&]*[&$]?', 'gi');
	args = args.replace(reg,'$1');
	if (args == '' || args == null) {
		args += '?' + argName + '=' + page;
	} else if (args.substr(args.length - 1,1) == '?' || args.substr(args.length - 1,1) == '&') {
			args += argName + '=' + page;
	} else {
			args += '&' + argName + '=' + page;
	}
	return url + args;
}
function toPage(page){ //页面跳转
	var turnTo = 1;
	if (typeof(page) == 'object') {
		turnTo = page.options[page.selectedIndex].value;
	} else {
		turnTo = page;
	}
	self.location.href = createUrl(turnTo);
}
function printHtml(mode){ //显示html代码
	getPage();
	checkPages();
	showTimes += 1;
	document.write('<div id="pager"></div>');
	document.getElementById('pager').innerHTML = createHtml(mode);
	
}
function formatInputPage(e){ //限定输入页数格式
	var ie = navigator.appName=="Microsoft Internet Explorer"?true:false;
	if(!ie) var key = e.which;
	else var key = event.keyCode;
	if (key == 8 || key == 46 || (key >= 48 && key <= 57)) return true;
	return false;
}

//}

//-->