用VRML实现网页3D模型的交互功能，用户通过点击模型可以改变模型的颜色，不过要安装Cortona3D Viewer插件才能显示模型-VRML 3D model with the realization of the interactive web page, users can change the model by clicking the color model, but want to install plug-ins to display the model Cortona3D Vie