[Drumstix42]

Will probably add this to my journal modification soon, but

To go about it in the UI, you would make a button first and add the command to the OnPress property...

such as:

<Button Name="EQ2i" OnPress="URL=&apos;http://eq2.wikia.com/wiki/Special:Search?search=&apos; ## Parent.Parent.LorePage.Name.Text&#xD;&#xA;browser URL" ScrollExtent="15,15" Size="15,15" Style="/ButtonStyles.tabscroll_left" Tooltip="Search EQ2i" />

This is similar to the code I use in my Examine windows.
The "Parent.Parent.LorePage.Name.Text" part needs to be changed to point to the Text object in the journal that display the quest name.