// JavaScript Document
function ss_txt(thisname,b)
{
if(thisname.value==b)
{
thisname.value="";
}
}

function ss_txt2(thisname,b)
{
if(thisname.value=="")
{
thisname.value=b;
}
}			
function chk(){ 	
if (form.message_name.value == "" || form.message_name.value == '请输入您的昵称') {
alert("请输入您的昵称！");
document.form.message_name.focus();
return false;
}
if (form.message_content.value == "" || form.message_content.value == '请填写评论内容'){
alert("请输入评论内容！");
document.form.message_content.focus();
return false;
}  
if (form.adminid.value == ""){
alert("请输入验证码！");
document.form.adminid.focus();
return false;
} 
}