function showPages(name, page, pageCount, pageName, pageExt) { //初始化属性
	this.name = name;      //对象名称
	this.page = page+1;         //当前页数
	this.pageCount = pageCount;    //总页数
	this.pageName = pageName; //文件名
	this.pageExt = pageExt;    //文件后缀名
	this.showTimes = 1;    //打印次数
}

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">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
			strHtml += '<span class="number">';
			if (prevPage < 1) {
				strHtml += '<span title="First Page">&#171;</span>';
				strHtml += '<span title="Prev Page">&#139;</span>';
			} else {
				strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
				strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#139;</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="Next Page">&#155;</span>';
				strHtml += '<span title="Last Page">&#187;</span>';
			} else {
				strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#155;</a></span>';
				strHtml += '<span title="Last Page"><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">共<b>'+this.pageCount+ '</b>页&nbsp;&nbsp;当前第<b>' + this.page + '</b>页</span>&nbsp;&nbsp;';
			strHtml += '<span class="number">';
			if (prevPage < 1) {
				strHtml += '<span title="第一页">第一页</span>&nbsp;&nbsp;';
				strHtml += '<span title="上一页">上一页</span>&nbsp;&nbsp;';
			} else {
				strHtml += '<span title="第一页"><a href="javascript:' + this.name + '.toPage(1);" style="text-decoration: underline;">第一页</a></span>&nbsp;&nbsp;';
				strHtml += '<span title="上一页"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');" style="text-decoration: underline;">上一页</a></span>&nbsp;&nbsp;';
			}
			if (this.page % 5 ==0) {
				var startPage = this.page - 4;
			} else {
				var startPage = this.page - this.page % 5 + 1;
			}
			if (startPage > 5) strHtml += '<span title="前5页"><a href="javascript:' + this.name + '.toPage(' + (startPage - 1) + ');">...</a></span>&nbsp;&nbsp;';
			for (var i = startPage; i < startPage + 5; i++) {
				if (i > this.pageCount) break;
				if (i == this.page) {
					strHtml += '<span title="第 ' + i + ' 页"><b>[' + i + ']</b>&nbsp;&nbsp;</span>';
				} else {
					strHtml += '<span title="第 ' + i + ' 页"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a>&nbsp;&nbsp;</span>';
				}
			}
			if (this.pageCount >= startPage + 5) strHtml += '<span title="后5页"><a href="javascript:' + this.name + '.toPage(' + (startPage + 5) + ');">...</a></span>';
			if (nextPage > this.pageCount) {
				strHtml += '&nbsp;&nbsp;<span title="下一页">下一页</span>&nbsp;&nbsp;';
				strHtml += '<span title="最后一页">最后一页</span>';
			} else {
				strHtml += '&nbsp;&nbsp;<span title="下一页"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');" style="text-decoration: underline;">下一页</a></span>&nbsp;&nbsp;';
				strHtml += '<span title="最后一页"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');" style="text-decoration: underline;">最后一页</a></span>';
			}
			strHtml += '</span>';
			break;
		case 2 : //模式2 (前后缩略,页数,首页,前页,后页,尾页)
			strHtml += '<span class="count">' + 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">&#139;</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 + ');">&#139;</a></span>';
			}
			if (this.page != 1) strHtml += '<span title="第 1 页"><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="第 ' + i + ' 页">[' + i + ']</span>';
					} else {
						if (i != 1 && i != this.pageCount) {
							strHtml += '<span title="第 ' + i + ' 页"><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="第 ' + this.pageCount + ' 页"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">[' + this.pageCount + ']</a></span>';
			if (nextPage > this.pageCount) {
				strHtml += '<span title="下一页">&#155;</span>';
				strHtml += '<span title="尾页">&#187;</span>';
			} else {
				strHtml += '<span title="下一页"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#155;</a></span>';
				strHtml += '<span title="尾页"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
			}
			strHtml += '</span>';
			break;
		case 3 : //模式3 (箭头样式,首页,前页,后页,尾页) (only IE)
			strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
			strHtml += '<span class="arrow">';
			if (prevPage < 1) {
				strHtml += '<span title="First Page">9</span>';
				strHtml += '<span title="Prev Page">7</span>';
			} else {
				strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">9</a></span>';
				strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">7</a></span>';
			}
			if (nextPage > this.pageCount) {
				strHtml += '<span title="Next Page">8</span>';
				strHtml += '<span title="Last Page">:</span>';
			} else {
				strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">8</a></span>';
				strHtml += '<span title="Last Page"><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 += '跳转到：<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 + '>' + 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 realPage = page - 1;
	var url = (page == 1) ? (this.pageName + "." + this.pageExt) : (this.pageName + "_" + realPage + "." + this.pageExt);
	return url;
}
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);
}
showPages.prototype.printHtml = function(mode){ //显示html代码
	this.showTimes += 1;
	//document.write('<div id="pages_' + this.name + '_' + this.showTimes + '" class="pages"></div>');
	//document.getElementById('pages_' + this.name + '_' + this.showTimes).innerHTML = this.createHtml(mode);
	document.write(this.createHtml(mode));
}
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;
}