Fill in how heigh and how wide you want your bridge, then follow the picture below.
You can put in rediculas large numbers if you want, but I won't be hold responsible if your browser ends up crashing because of it.

You don't see anything? It isn't working right? Get a good browser (IE (Internet Explorer) is NOT a good browser). Download Firefox, Chrome, Opera or Safari instead.

To make this work with IE I need to replace the drawing technique to something that is way slower and works terrible. I'm not going to do that for such a worthless browser as IE.

If you insist on using IE, get the Google Chrome Frame here, it should work then.