How to preview the topic

[ssocoins]

When I post a new topic, because there are some codes in the content, I want to preview the how is the effect of the content,so, I press "preview" at the button of the page ,it will automatic save the post as a draft, but, didn't show me the how is the real effect of the content, I tried different browser , the "preview" function still didn't work.
Anybody know how to solve this issue?  I need the "preview" this function works for me.
thanks.

[mk4]

The "preview" function is working for me. On almost all browsers. You probably just didn't know where to find it.

You just have to scroll up a bit to see the preview

[ssocoins]

Thanks,I can do this as well, like I did this post,the problem is when it shows some code, how didn't to preview the final effect