// JavaScript Document
//Js翻页代码

showPages.prototype.getPage = function(){
	var args = location.search;
	var reg = new RegExp('[\?&]?' + this.argName + '=([^&]*)[&$]?', 'gi');
	var chk = args.match(reg);
	this.page = RegExp.$1;
}
showPages.prototype.checkPages = function(){
	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){
	var strHtml = '', prevPage = this.page - 1, nextPage = this.page + 1;
	if (mode == '' || typeof(mode) == 'undefined') mode = 0;
	switch (mode) {
		case 1 :
			strHtml += '<span>';
			if (prevPage < 1) {
				strHtml += '<span title="First Page">[ First ] </span>';
				strHtml += '<span title="Prev Page">[ Prev ] </span>';
				
			} else {
				strHtml += '<span title="First Page"> <a href="javascript:' + this.name + '.toPage(1);">[ First ]</a> </span>';
				strHtml += '<span title="Prev Page"> <a href="javascript:' + this.name + '.toPage(' + prevPage + ');"> [ Prev ]</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="Next Page"> [ Next ]</span>';
				strHtml += '<span title="Last Page"> [ Last ]</span>';
			} else {
				strHtml += '<span title="Next Page"> <a href="javascript:' + this.name + '.toPage(' + nextPage + ');"> Next</a></span>';
				strHtml += '<span title="Last Page"> <a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');"> Last</a></span>';
			}
			strHtml += '<span>';
			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" id="pageInput' + this.showTimes + '" value="' + this.page + '" style="width:25px;" title="Input page" onkeypress="return ' + this.name + '.formatInputPage(event);" onfocus="this.select()">';
				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) {
	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 + '=[^&]*[&$]?', '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){
	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){
	this.getPage();
	this.checkPages();
	this.showTimes += 1;
	document.write('<div id="pages_' + this.name + '_' + this.showTimes + '" class="pages"></div>');
	document.getElementById('pages_' + this.name + '_' + this.showTimes).innerHTML = unescape(this.createHtml(mode));
	
}
showPages.prototype.formatInputPage = function(e){
	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;
}
//document.write(createHtml(1));

pg.printHtml(1);