function checklength(){
MessageLength=document.form.comment.value.length;
alert("您的内容已有 "+MessageLength+" 字节");
}

var MessageMax="50000";
function ValidateForm(){
	usernameLength=document.form.username.value.length;
	if(usernameLength<1){alert("请输入用户名称!");return false;}
	userpsdLength=document.form.userpsd.value.length;
	if(userpsdLength<1){alert("请输入用户密码!");return false;}
	titlesLength=document.form.title.value.length;
	if(titlesLength<2){alert("文章标题不能小于2个字符！");return false;}
	MessageLength =document.form.comment.value.length;
	errors="";
	if(MessageLength<4){errors="文章内容不能小于4个字符！";}
	if(MessageMax !=0){
		if(MessageLength > MessageMax){
			errors="本论坛限制文章长度不得超过 "+MessageMax+" 字节\\n目前您的文章字节: "+MessageLength;
			}
		}
	if(errors != ""){alert(errors);return false;}
	else{
	window.clipboardData.setData('Text', document.form.comment.value);
	document.form.submit1.disabled = true;
	return true;
	}
	}
function e(theSmilie){
document.form.comment.value += ":em"+theSmilie+":";
document.form.comment.focus();
}
var i=0;
function presskey(eventobject){
	if(event.ctrlKey && window.event.keyCode==13){
		i++;
		if (i>1) {alert('帖子正在发出，请耐心等待！');return false;}
	this.document.form.submit();
	}
	}