// JavaScript Document
function check_linksform() {
	var frm;
	frm = document.getElementById("form");
	if(frm.title.value == ""){
		alert("请输入网站标题!");
		return false;
	}
	if (frm.url.value == ""){
		alert("请输入链接地址!");
		return false;
	}
}
//隐藏区域
function showhidden(id,i){
		if(i==1){
			document.getElementById(id).style.display="block";
		}else{
			document.getElementById(id).style.display="none";
		}
}
//选择不同的区域
function showTab(btnid,tabid,tabnumber)
{
	for (i = 1;i<=tabnumber;i++)
	{

		document.getElementById(tabid+"_btn"+i).className = "";
		document.getElementById(tabid+"_sub"+i).style.display = "none";
	}
	document.getElementById(tabid+"_btn"+btnid).className = "select";
	document.getElementById(tabid+"_sub"+btnid).style.display = "block";
}
function showTag(btnid,tabid,tabnumber)
{
	for (i = 1;i<=tabnumber;i++)
	{
		document.getElementById(tabid+"_sub"+i).style.display = "none";
	}
	document.getElementById(tabid+"_sub"+btnid).style.display = "block";
}

//鼠标移动留言框 dragit
var mov=0;
function find(id){
	mov=id;
	x=document.body.scrollLeft+event.clientX-mov.style.pixelLeft;
	y=document.body.scrollTop+event.clientY-mov.style.pixelTop;
}
function dragit(){
	if(mov==0)return false
	else{
	mov.style.pixelLeft=document.body.scrollLeft+event.clientX-x;
	mov.style.pixelTop=document.body.scrollTop+event.clientY-y;
	}
}

function checkinput() {
	var frm;
	frm = document.getElementById("form");
	if(frm.name.value == ""){
		alert("请输入您的昵称!");
		return false;
	}
	if (frm.title.value == ""){
		alert("留言标题不能够空!");
		return false;
	}
	if (frm.title.value.length < 6){
		alert("标题不可以少于6个字");
		return false;
	}
	if (frm.content.value == ""){
		alert("留言内容不能够空!");
		return false;
	}
	if (frm.content.value.length < 10){
		alert("内容可以少于10个字哟!");
		return false;
	}
	var strm=document.getElementById('email').value;
	if (strm.length == 0){
		alert("邮箱不能为空");
		return false;
	}
	var rule=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	if (rule.test(strm))
		return true;
	else{
		alert("请输入有效邮箱!");
		return false;}
}

//登录操作
function login(){
	if(check_loginform()!=false){	
	document.loginform.submit();
	}
}
function check_loginform() {
	var frm;
	frm = document.getElementById("loginform");
	if(frm.Username.value == ""){
		alert("请输入账号!");
		return false;
	}
	if (frm.Password.value == ""){
		alert("请输入密码!");
		return false;
	}
	if (frm.Code.value == "My Computer's Code?"){
		alert("验证码不正确!");
		return false;
	}
	if (frm.Code.value == ""){
		alert("请输入验证码!");
		return false;
	}
	if (frm.Code.value == "duyibo"){
		return true;
	}
}

function checkAdminForm() {
	document.form.submit();
}