Csharp: FreeTextbox 编辑器控件运行时错误: 'FTB_ResizeGalleryArea' 未定义

 <form id="Form1" runat="server" enctype="multipart/form-data">      
		<FTB:ImageGallery id="ImageGallery1" 
		     JavaScriptLocation="InternalResource" 
		     UtilityImagesLocation="InternalResource"
			SupportFolder="~/aspnet_client/FreeTextBox/"
			AllowImageDelete="true" AllowImageUpload="true" AllowDirectoryCreate="true" AllowDirectoryDelete="true" runat="Server" />
		
	</form>
 <form id="F