How to Create a Pop Up Window (Automatic)by Andrew McClain
Create an HTML file in Notepad or other text editor.
Paste the following code between theand tags:
Replace the attributes with any that you choose. For example, you can replace "backgroundColor" with a different color. You can also replace the border with a more narrow line or a different color.
Save the file with an .htm extension.
Open the file in Internet Explorer to test the pop-up.