I am getting some height of my div from jquery. This height is changing time to time. How can I get its height minimum `200px` and maximum it can be any number.

```
$('#child_div').height( child_div_transfered_height );

```

I am getting "child\_div\_transfered\_height" a number which is changing countiusely. I want to fix it minimum `200px`. How can i do this?