<!--
function testMesLen(mes){
document.commentForm.mesLen.value=3000-mes.value.length;
if (document.commentForm.mesLen.value<0){
 alert("您输入的内容过长！\nThe message that you wrote is so long that the field can't hold!");
 mes.value=mes.value.substring(0,3000);
}
}
function datacheck()
{
  if(document.commentForm.authorName.value =="")
	{alert("称呼不能为空！");
    document.commentForm.authorName.focus();
	return (false);
     }
  if(document.commentForm.commentContent.value =="")
	{alert("留言内容不能为空！");
    document.commentForm.commentContent.focus();
	return (false);
     }	
	return (true);
}
//-->