I want to open a new window with content I pass through the URL link.

I’m passing variables through the URL, to determine the content of a dynamic (php) page.

But I’d like to open this URL in a new browser window with specific height and width settings.

I know how to open a new window with those settings using javascript….

But I don’t know how to do both --  pass the variables AND use the javascript.

Can anyone point me in the right direction?