Copy to Clipboard Feature -Compatible with Firefox

I have a website which requires copy to clipboard feature.? This feature must work with in a text? button.? When a user clicks on the text button, it will not only copy the text with in the button to the clipboard, but it must also open a new window with a specified URL. I have this exact project working 100%, BUT it only works with IE.? I need this to work with other browsers like Firefox primarily, Safari, etc. It's not a problem for me to provide? the coding and files which currently work with IE.? ? I'm hoping this can save a lot of? time? for the coder if it possibly needs a? minor tweek.? My current coding is made up of javascript with the HEADER of my page.? I execute via html with in div tags to specify the button, the name with in the button, new window execution and the url of the new window).? This all uses a call function to a Shockwave Flash file. Please message me and I will provide my website to you.? You can then examine my current? feature, and make a clear judgement if you can provide the same feature compatible in Firefox.