function essub(){
			var content=document.getElementById('content1').value;
			var nickname=document.getElementById('nickname1').value;
			if(""==content){
					alert("请输入你的留言");
					return;
				}

			if(""==nickname){
				nickname="匿名用户";
				}

			if(getStrLength(content) > 2000)
			{
				alert("发言最多为2000字符！每个汉字相当于两个字符");
				return;
			}

			if(getStrLength(nickname) > 20)
			{
				alert("昵称最多20字符！每个汉字相当于两个字符");
				return;
			}
			
			nickname=escape(nickname);
			content=escape(content);
			document.getElementById('content').value=content;
			document.getElementById('nickname').value=nickname;
			document.getElementById('newscomment').submit();
			
			}

		function getStrLength(str){
			var totallength=0;
			for (var i=0; i < str.length;i++){
				var intCode=str.charCodeAt(i);
				if (intCode>=0&&intCode<=128) {
					totallength=totallength+1;
				}else {
					totallength=totallength+2;
				}
			} 
			return totallength;	
		}