How can I Open a New Window

To create a new window that opens to a specific page, we use the code:

How can I Open a New Window of Specified Height and Width

To create a new window that opens to a specific page
with specific height and width, we use the code:

Open a Window With No URL

To create the button, we use this code:

This button calls the openwindow() function when clicked on.
The Javascript code for this openwindow() function is: