bad design to put html in controller?

[eluser]chubbypama[/eluser]
Hi there. i'm writing some functions / methods in my controller that are going to be ajax calls. Using the data returned by the function, I ultimately need to create a table.
But I don't want to have to write javascript to do this.
I'd rather just send a string back that represents a table and all the data inside.

But is this considered bad design because I have html in the controller instead of in the view?