function check_news()
{
	if (document.submitnews.author.value.length<=0)
	{
		alert("请填写新闻发布人姓名！");
		document.submitnews.author.focus();
		return false;
	}
	else if (document.submitnews.title.value.length<=0)
	{
		alert("请填写新闻标题！");
		document.submitnews.title.focus();
		return false;
	}
	else if (document.submitnews.content.value.length<=0)
	{
		alert("新闻内容不能为空！");
		document.submitnews.content.focus();
		return false;
	}
	return true;
}