Got it to work by first clicking in the extreme right of the window size box, click-dragging to select the non visible text (maybe too small a font size?) then hitting delete. Then entering the window size and clicking on the enter key, did that for both width and height and it entered the correct window size and coordinates in the code box. The copy to clipboard also worked. So to fix the problem you need to be sure the existing text for window width and height is visible in the box and maybe having another button to activate the script. If I do not adjust the window size the code does not use the relocated window coordinates. But if I also click on the show marker in the middle of the map box it does enter the correct coordinates into the code box.

What is your browser and version. Upgrade.

no, but the PC is not accessible.. everything needs to be preconfigured to load from boot, then auto load gps co-ords every hour. it al works fine apart from the 7 day forecast

@TomSlavkovsky yes, about they mean. is it possible to turn it into a frame (widget) ?
(possible in the following versions of widget)

New version = new features and better experience.

You can still embed windytv to your site: go to windytv.com, then top-right corner(menu), and finally click "embed widget on page" (https://www.windytv.com/widgets)

Now I found it again. It appears after clicking on "my favorits".

You can make yoir own color palletes in settings.

David, the update is spectacular on Firefox and Chrome and Internet Explorer on my computer running Windows 10.
Click on the < icon on the right side of the screen. A new menu options display pops out and you can select whatever overlays you want (including cloud base). Or just click on the "flying" tab on top to see the menu selection recommended for pilots (it includes cloud base).
When you select clouds, look down on the overlay menu and you'll see the options to show low, medium,high or all clouds. It is a vast improvement over the old display. Play with it for 10 minutes and you'll be flying happy again.

@richardHC
I take that back, it does compare OK with rainfall, it's just harder to see the lighter rainfall areas when combined with the cloud cover.

I have managed to add gps co-ords to the windows browser based version.. its just a matter of updating the url with the new data every hour or so..

It is there in menu