> im thinking that using the golden ratio for working out the other > dimension if x or y are given for a window size would be a good idea > <snip> > any ideas? It depends - are you talking about the size of a popup window, or just the size of the area of a window which you would fill with content? -- Sarah Sweeney :: Web Developer & Programmer Portfolio :: http://sarah.designshift.com Blog :: http://hardedge.ca