Dock is a small application written in AppleScript that customizes the Mac OS X Dock for you, to the way you want it.
Current Features:
Scans for System Version to determine what to disable or what to enable. This occurs only with the Glass, No Glass and Top Positioning options.
Mac OS X Tiger on Intel & PPC Compatibility (Universal Binary)
Now set Dock Size in Text Field as Decimal Value.
Mac OS X Tiger:
Position the Dock at the Top
Move it to the Top Right/Left/Middle
Auto-Hide It
Other Features are in Application, but are cross platform, those listed above are specific to the OS X Version installed on your computer.