function chk_topic(o){
	if(o.subject.value.strtrim().length <2 || o.subject.value.strtrim().length >80){
		o.subject.focus();
		$$('e_subject').innerHTML = "·请填写标题，长度在不能超过80字符内。";
		$$('e_subject').className = 'c_red';
		return false;
	}
	if(o.content.value.strtrim().length <8 || o.content.value.strtrim().length >10000){
		o.content.focus();
		$$('e_content').innerHTML = "·请填写正文，长度在8-3000字符。";
		$$('e_content').className = 'c_red';
		return false;
	}
	
}
function chk_review(o){
	if(o.content.value.strtrim().length <1 || o.content.value.strtrim().length >3000){
		o.content.focus();
		$$('e_content').innerHTML = "·请填写回应内容，长度在1000字符内。";
		$$('e_content').className = 'c_red';
		return false;
	}
}