function update_func() {
	     var comments = document.getElementById("comments").value;
		 var comment_id = document.getElementById("comment_id").value;
		 var rating_id = document.getElementById("rating_id").value;
	     var material_id = document.getElementById("material_id").value;
	     var rate_value = document.getElementById("rate_value").value;
	     var comment_status = document.getElementById("comment_status").value;
	     var rating_status = document.getElementById("rating_status").value;
	     
	     var url = 'ajax_comments_popup.php';	    
    	 var params = 'comments='+comments+'&comment_id='+comment_id+'&act=S&rating_id='+rating_id+'&material_id='+material_id+'&comment_status='+comment_status+'&ratingStatus='+rating_status+'&rate_value='+rate_value;
    	 var amjax = new Ajax.Updater(
    	 {success: 'err_msg_div'},url,
    	 {method: 'post', parameters: params,onComplete:getProductCodeResult1});	     
 	}
 	
 	function getProductCodeResult1(request) {
	    var v = request.responseText;
		arr = v.split("@");
		var mid = arr[0];
		var cid = arr[1];
		var rid = arr[2];
		
		var Div1 = "DefaultComment_"+mid;
		var Div2 = "AfterComment_"+mid;	
		var txt = '<a target="_blank" style="cursor:pointer;" onclick="javascript:AddEditComment(\''+cid+'\',\''+rid+'\',\''+mid+'\');" class="preview1">Edit Comments</a>';
		document.getElementById(Div1).innerHTML = '';
		document.getElementById(Div1).style.display = "block";
		document.getElementById(Div1).innerHTML = txt;
		document.getElementById("popup_result").style.display = "block";
		Modalbox.hide();
		return false;
	}