function li_over(num,count){
	for(i=1;i<=count;i++){
		document.getElementById("li0"+i).className = "";
	}
	document.getElementById("li0"+num).className = "active";
	
}
function getText(){
	var wokao = document.getElementById("comment");
	if(wokao.value == "请输入您的评论内容..."){
		wokao.value = ""
	}
}
function nnd(){
	var wokao = document.getElementById("comment");
	if(wokao.value == ""){
		wokao.value = "请输入您的评论内容...";
	}
}