Update 8 - rezBrowserTo

- Function goto [called by links to change the iframe's src] now check
to see if a browser exists, if one doesn't, one is created with the
link's reference.

- rezBrowserTo has been updated to match the normal rezBrowser function.
In the future I will remove the normal rezBrowser function and have a
null argument pass default the .src property of the iframe to bing.com.