缓慢加载图像，显示临时图像的最佳方式？也许JQuery？

I am using Google Charts to display charting data in my application. Sometimes Google is slow and the charts will take a while to load. This scenario seems to be a common enough pattern -- so I'm wondering what's a good approach to show a temporary image, while the image is delivered from Google. I have access to jQuery -- and have seen a number of "preloading" plugins. Is this what I need? I am using Google Charts to display charting da