function postComment(myForm){		
	
	var url = '/feedentry/addcomment';

	if(myForm.commentPoster.value!="" && myForm.commentBody.value!="" ){
		myForm.submit.disabled=true;
		myForm.submit.value="正在提交...";
		var myAjax = new Ajax.Request(url,
				       {method: 'post', parameters: Form.serialize(myForm), onComplete: updateComments}
					    );
	}else{
		alert("必须填写姓名和评论内容！");
	}
	
}
function updateComments(request){
	var d = $('divComments');
    d.innerHTML=d.innerHTML + request.responseText;
	var d2= $('commentNumber');		
	if(Number(d2.innerHTML)){
		d2.innerHTML++;
	}else{
		var d3= $('outComment');
		d3.innerHTML = '评论：共&nbsp;<div id="commentNumber" style="display:inline">1</div>&nbsp;条';
	}	
	var cf = $('CommentForm');
	cf.commentBody.value='';
	cf.submit.disabled=false;
	cf.submit.value="提交";
}