function showPages(name) { //初始化属性
	this.name = name;      //对象名称
	this.page = 1;         //当前页数
	this.pageCount = 1;    //总页数
	this.argName = 'page'; //参数名
	this.showTimes = 1;    //打印次数
	this.condition = "";    //查询条件
	this.url = "";    //条件URL
	this.divID = "mainDiv";    //页面内容
	this.ajax  = false;   //是否使用ajax
}
showPages.prototype.getPage = function(){ //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('[\?&]?' + this.argName + '=([^&]*)[ && #36;]?', 'gi');
	var chk = args.match(reg);
	this.page = RegExp.$1;
}
showPages.prototype.checkPages = function(){ //进行当前页数和总页数的验证
	if (isNaN(parseInt(this.page))) this.page = 1;
	if (isNaN(parseInt(this.pageCount))) this.pageCount = 1;
	if (this.page < 1) this.page = 1;
	if (this.pageCount < 1) this.pageCount = 1;
	if (this.page > this.pageCount) this.page = this.pageCount;
	this.page = parseInt(this.page);
	this.pageCount = parseInt(this.pageCount);
}
showPages.prototype.createHtml = function(mode){ //生成html代码
	var strHtml = '', prevPage = this.page - 1, nextPage = this.page + 1;
	if (mode == '' || typeof(mode) == 'undefined') mode = 0;
	switch (mode) {
		case 0 : //模式1 (页数,首页,前页,后页,尾页)
		strHtml += '<span class="count">页数: ' + this.page + ' / ' + this.pageCount + '</span>';
		strHtml += '<span class="number">';
		if (prevPage < 1) {
			strHtml += '<span title="首页">&#171;</span>';
			strHtml += '<span title="上一页">&#8249;</span>';
		} else {
			strHtml += '<span title="首页"><a href="javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
			strHtml += '<span title="上一页"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#8249;</a></span>';
		}
		for (var i = 1; i <= this.pageCount; i++) {
			if (i > 0) {
				if (i == this.page) {
					strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
				} else {
					strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
				}
			}
		}
		if (nextPage > this.pageCount) {
			strHtml += '<span title="下一页">&#8250;</span>';
			strHtml += '<span title="尾页">&#187;</span>';
		} else {
			strHtml += '<span title="下一页"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#8250;</a></span>';
			strHtml += '<span title="尾页"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
		}
		strHtml += '</span><br />';
		break;
		case 1 : //模式1 (10页缩略,首页,前页,后页,尾页)
		strHtml += '<span class="count">页数: ' + this.page + ' / ' + this.pageCount + '</span>';
		strHtml += '<span class="number">';
		if (prevPage < 1) {
			strHtml += '<span title="首页">&#171;</span>';
			strHtml += '<span title="上一页">&#8249;</span>';
		} else {
			strHtml += '<span title="首页"><a href="javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
			strHtml += '<span title="上一页"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#8249;</a></span>';
		}
		if (this.page % 10 ==0) {
			var startPage = this.page - 9;
		} else {
			var startPage = this.page - this.page % 10 + 1;
		}
		if (startPage > 10) strHtml += '<span title="Prev 10 Pages"><a href="javascript:' + this.name + '.toPage(' + (startPage - 1) + ');">...</a></span>';
		for (var i = startPage; i < startPage + 10; i++) {
			if (i > this.pageCount) break;
			if (i == this.page) {
				strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
			} else {
				strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
			}
		}
		if (this.pageCount >= startPage + 10) strHtml += '<span title="Next 10 Pages"><a href="javascript:' + this.name + '.toPage(' + (startPage + 10) + ');">...</a></span>';
		if (nextPage > this.pageCount) {
			strHtml += '<span title="下一页">&#8250;</span>';
			strHtml += '<span title="尾页">&#187;</span>';
		} else {
			strHtml += '<span title="下一页"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#8250;</a></span>';
			strHtml += '<span title="尾页"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
		}
		strHtml += '</span><br />';
		break;
		case 2 : //模式2 (前后缩略,页数,首页,前页,后页,尾页)
		strHtml += '<span class="count">页数: ' + this.page + ' / ' + this.pageCount + '</span>';
		strHtml += '<span class="number">';
		if (prevPage < 1) {
			strHtml += '<span title="首页">&#171;</span>';
			strHtml += '<span title="上一页">&#8249;</span>';
		} else {
			strHtml += '<span title="首页"><a href="javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
			strHtml += '<span title="上一页"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#8249;</a></span>';
		}
		if (this.page != 1) strHtml += '<span title="Page 1"><a href="javascript:' + this.name + '.toPage(1);">[1]</a></span>';
		if (this.page >= 5) strHtml += '<span>...</span>';
		if (this.pageCount > this.page + 2) {
			var endPage = this.page + 2;
		} else {
			var endPage = this.pageCount;
		}
		for (var i = this.page - 2; i <= endPage; i++) {
			if (i > 0) {
				if (i == this.page) {
					strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
				} else {
					if (i != 1  &&  i != this.pageCount) {
						strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
					}
				}
			}
		}
		if (this.page + 3 < this.pageCount) strHtml += '<span>...</span>';
		if (this.page != this.pageCount) strHtml += '<span title="Page ' + this.pageCount + '"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">[' + this.pageCount + ']</a></span>';
		if (nextPage > this.pageCount) {
			strHtml += '<span title="下一页">&#8250;</span>';
			strHtml += '<span title="尾页">&#187;</span>';
		} else {
			strHtml += '<span title="下一页"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#8250;</a></span>';
			strHtml += '<span title="尾页"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
		}
		strHtml += '</span><br />';
		break;
		case 3 : //模式3 (箭头样式,首页,前页,后页,尾页) (only IE)
		strHtml += '<span class="count">页数: ' + this.page + ' / ' + this.pageCount + '</span>';
		strHtml += '<span class="arrow">';
		if (prevPage < 1) {
			strHtml += '<span title="首页">9</span>';
			strHtml += '<span title="上一页">7</span>';
		} else {
			strHtml += '<span title="首页"><a href="javascript:' + this.name + '.toPage(1);">9</a></span>';
			strHtml += '<span title="上一页"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">7</a></span>';
		}
		if (nextPage > this.pageCount) {
			strHtml += '<span title="下一页">8</span>';
			strHtml += '<span title="尾页">:</span>';
		} else {
			strHtml += '<span title="下一页"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">8</a></span>';
			strHtml += '<span title="尾页"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">:</a></span>';
		}
		strHtml += '</span><br />';
		break;
		case 4 : //模式4 (下拉框)
		if (this.pageCount < 1) {
			strHtml += '<select name="toPage" disabled>';
			strHtml += '<option value="0">No Pages</option>';
		} else {
			var chkSelect;
			strHtml += '<select name="toPage" onchange="' + this.name + '.toPage(this);">';
			for (var i = 1; i <= this.pageCount; i++) {
				if (this.page == i) chkSelect=' selected="selected"';
				else chkSelect='';
				strHtml += '<option value="' + i + '"' + chkSelect + '>页数: ' + i + ' / ' + this.pageCount + '</option>';
			}
		}
		strHtml += '</select>';
		break;
		case 5 : //模式5 (输入框)
		strHtml += '<span class="input">';
		if (this.pageCount < 1) {
			strHtml += '<input type="text" name="toPage" value="No Pages" class="itext" disabled="disabled" />';
			strHtml += '<input type="button" name="go" value="GO" class="ibutton" disabled="disabled" /></option>';
		} else {
			strHtml += '<input type="text" value="Input Page:" class="ititle" readonly="readonly" />';
			strHtml += '<input type="text" id="pageInput' + this.showTimes + '" value="' + this.page + '" class="itext" title="Input page" onkeypress="return ' + this.name + '.formatInputPage(event);" onfocus="this.select()" />';
			strHtml += '<input type="text" value=" / ' + this.pageCount + '" class="icount" readonly="readonly" />';
			strHtml += '<input type="button" name="go" value="GO" class="ibutton" onclick="' + this.name + '.toPage(document.getElementById(\'pageInput' + this.showTimes + '\').value);" /></option>';
		}
		strHtml += '</span>';
		break;
		default :
		strHtml = 'Javascript showPage Error: not find mode ' + mode;
		break;
	}
	return strHtml;
}
showPages.prototype.createUrl = function (page) { //生成页面跳转url
	if (isNaN(parseInt(page))) page = 1;
	if (page < 1) page = 1;
	if (page > this.pageCount) page = this.pageCount;
	var url = location.protocol + '//' + location.host + location.pathname;
	var args = location.search;
	var reg = new RegExp('([\?&]?)' + this.argName + '=[^&]*[ && #36;]?', 'gi');
	args = args.replace(reg,'$1');
	if (args == '' || args == null) {
		args += '?' + this.argName + '=' + page;
	} else if (args.substr(args.length - 1,1) == '?' || args.substr(args.length - 1,1) == '&') {
		args += this.argName + '=' + page;
	} else {
		args += '&' + this.argName + '=' + page;
	}
	return url + args;
}
showPages.prototype.toPage = function(page){ //页面跳转
	var turnTo = 1;
	if (typeof(page) == 'object') {
		turnTo = page.options[page.selectedIndex].value;
	} else {
		turnTo = page;
	}
	//self.location.href = this.createUrl(turnTo);
	var myfrm  = document.createElement("form");
	myfrm.action = this.url;
	myfrm.method = "post";
	document.body.appendChild(myfrm);
	if(typeof(this.condition) == 'object')
	{
		this.condition[this.argName] = turnTo;
	}
	else
	{
		this.condition = this.condition.toQueryParams();
		this.condition[this.argName] = turnTo;
	}
	var hiddens = $H(this.condition).toQueryString().toHiddens();
	for(var i=0;i<hiddens.length;i++)
	{
		myfrm.appendChild(hiddens[i]);
	}
	if(this.ajax)
	{
		var pagePars = myfrm.serialize();
		var pageAjax = new Ajax.Updater(this.divID, this.url,{method : myfrm.method,evalScripts:true,parameters : pagePars});
	}
	else
	{
		myfrm.submit();
	}
}
showPages.prototype.printHtml = function(mode){ //显示html代码
	//this.getPage();
	this.checkPages();
	this.showTimes += 1;
	if(this.ajax)
	{
		return '<div id="pages_' + this.name + '_' + this.showTimes + '" class="pages">'+this.createHtml(mode)+'</div>';
	}
	else
	{
		document.write('<div id="pages_' + this.name + '_' + this.showTimes + '" class="pages">'+this.createHtml(mode)+'</div>');
	}
}
showPages.prototype.formatInputPage = function(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;
}