Cfflush question

Hey all,
I have a question about implementing an idea. I have a dashboard type screen that is a bunch of buttons with a few overview graphs. The graphs take some time to generate but the rest can go up instantly. I want to flush the dashboard with a little loading icon in the graph spot. I got this part. I was then gonna use javascript/jQuery to change the icon to the graphs. So after i flush, I thought i could use cfcontent to save the html, but then i thought about it and it saves the cf, not the html, right? What can i use to save the html in?