function home_yan(pB)
{ 
	var obj=document.getElementById("Code");
	var obj1=document.getElementById('imgCode');
	obj.value="";
	if(pB==1) obj.focus();
	obj1.className="";
	obj1.src='/yan.ashx?a='+Math.random();
}

function txtOK_onclick() 
{
    var LUserName=document.getElementById("UserName");
    if(LUserName.value=="")
    {
        alert("请输入账号");
        LUserName.focus();
        return false;
    }
    
    var LPassword=document.getElementById("Password");
    if(LPassword.value=="")
    {
        alert("请输入密码");
        LPassword.focus();
        return false;
    }
    
    var LCode=document.getElementById("Code");
    if(LCode.value=="")
    {
        alert("请输入验证码");
        LCode.focus();
        return false;
    }
}