function checkLogin(){
	var userName=$('LoginName');
	var userPwd=$('LoginPwd');
	var nameMsg=$('nameMsg');
	var pwdMsg=$('pwdMsg');
	if(userName.value.length==0 ){
		nameMsg.innerHTML="<font style='color:red'>用户名不能为空!</font>";
		userName.focus();
	}else if(userPwd.value.length==0){
		nameMsg.innerHTML="";
		pwdMsg.innerHTML="<font style='color:red'>密码不能为空!</font>";
		userPwd.focus();
	}else{
		pwdMsg.innerHTML="";
		nameMsg.innerHTML="";
		document.forms["loginForm"].submit();
	}
}

//清空文本
function clareText(){
	var userName=$('LoginName').value="";
	var userPwd=$('LoginPwd').value="";
}

//enter键登录
function enter(){
	var userName=$('LoginName');
	var userPwd=$('LoginPwd');
	if((userName.value.length>=6 && userName.value.length<=18) &&
	   (userPwd.value.length>=6  && userPwd.value.length<=18)){
		if(event.keyCode==13){
			document.forms["loginForm"].submit();
		}
	}
}

//检查密码
function checkPwd(){
	var newPassword=$('newPassword');
	var passwordOK=$('passwordOK');
	if(newPassword.value.length<6 || newPassword.value.length>18){
		$('c_Password').innerHTML="新密码长度应为:6--18个字符!";
	}else if(passwordOK.value!=newPassword.value){
		$('c_Password').innerHTML="两次输入的密码不一至!";
	}else{
		$('c_Password').innerHTML="";
		document.forms["updatePwd"].submit();
	}
}