Place the current directions page offline by going to “Web Pages” and then clicking the hammer icon beside your directions page then check "under construction"
Go to Map Quest at wwwmapquest.com and search for the map you are looking for. When you find it copy the Map Quest address.
Create a new web page and select the option "I would like to create a link..." then click continue.
Insert the map quest address that you copied into the URL address, name the link "Directions" and select the option to open this page in its own window and then save.