Popup Windows: The BasicsWe'll begin the tutorial by creating a basic popup window. The technique described here addresses all the major issues in popups. The popup always comes to the front. Different links can target the same popup. The code is simple and easily modified. Everything for the rest of the turorial is a variation on the theme described here. The code in this page creates a popup that is opened from a link. In this section we'll show the code with just the minimal description you need to get it going. For more details see Under the Hood: Details of the Popup Script.
First, copy this script into the
For now we'll skip the details of how the script works, (see Under the Hood: Details of the Popup Script for a line-by-line description), and move to the next step. The script above opens the popup, but something needs to run the script. The most common situation is that the script is run when the user clicks on a link. A link like the following would run the script:
<A HREF="popupbasic.html" onClick="return popup(this, 'notes')">my popup</A>
which creates this link:
Most of the link is as usual. The URL of the page being linked to is in the
<A HREF="popupbasic.html" onClick="return popup(this, 'stevie')">my popup</A>
Read This Next Part Or You'll Go Insane Trying to Figure Out Why Your Popup Doesn't WorkA small but crucial point is often overlooked. The command in
onClick="return popup(this, 'notes')"
To avoid this problem we have one more piece of code. This code does not go in the main page. Put the following code in the popup page itself. So, for example, the link above opens the page
When the page in the popup is loaded, this script tells the browser to put the focus on the popup. This means that the popup comes to the front every time.
That's all the basic pieces to a popup. Everything from here out is a variation on this theme.