function check(){
	//標(biāo)題
	if(addarticle.title.value == ""){
		alert("請輸入標(biāo)題");
		addarticle.title.focus();
		return false;
	}
	if(addarticle.title.value.length > 255){
		alert("標(biāo)題不能多于255個字符！");
		addarticle.title.focus();
		return false;
	}
	//文章內(nèi)容
	if(addarticle.content.value == ""){
		alert("內(nèi)容不能為空");
		addarticle.content.focus();
		return false;
	}
	//作者
	if(addarticle.author.value == ""){
		alert("作者不能為空!");
		addarticle.author.focus();
		return false;
	}
}