Insert code like facebook slows the visualization of the web from the web page editor

Hi all, I’m new to the forum, using the market egistré facebook: D

I have a query. What happens is I was doing a simple html page in my index, and when I inserted the code “Like” of “Facebook” on the page, the DreamWeaver and FrontPage and other web publishers get very slow or freeze, that’s normal with this code?