all the other windows disappear

Do these windows close, or drop to the task bar? What is the web site? Can you post a public link to that page?

Mouse over a link, right click and select Open New Tab/Window

Hi Fred,

                Yes they do drop to the taskbar and yes as a last resort I could post a link to that page.

Windows 7 has a cool feature. Assuming your keyboard has the "Windows" key, you can use a key combination to dock one window to the left half of the screen and another window to the right half of the screen.

To dock a window to the left half of the screen, activate the window, then hold down the Windows key and press and release the Left Arrow key

To dock a window to the right half of the screen, activate the window, then hold down the Windows key and press and release the Right Arrow key

You may need to adjust the zoom level in the windows to see everything you want to see.

Does that work on yours?

Hi I`ve found that a right click then open in new tab works for me.

Even better answer:- mozilla `tools` `options` `general` `open new windows in a new Tab` click this.