function popwin(path)
{		
window.open(path,"","height=355,width=300,resizable=no,scrollbars=no,status=no,toolbar=no,menubar=no,location=no");
}

function popwin3(path)
{		
window.open(path,"","height=340,width=340,resizable=no,scrollbars=no,status=no,toolbar=no,menubar=no,location=no");
}

var ckflag=false;
function checkinput()
{
	var content=document.frmAnnounce.commentmain.value;
	if(content=="")
	{
		alert('评论不能为空!');
		document.frmAnnounce.commentmain.focus();
		return false;
	}
	if(content.length<4)
	{
		alert('评论长度应大于3个字符!');
		document.frmAnnounce.commentmain.focus();
		return false;
	}
	if(content.indexOf("密码")>-1){
		if(!ckflag){
			ckflag=true;
			alert('解压密码请注意“本站下载”按钮下方提示！！');
			return false;
		}
	}
	return true;
}