CodeLifter.com - JavaScript Auto-Sizing Image Popup Window Script

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Note: Modified Version With Timed Closure A number of people have requested I write a version of this script where the image popup window can be set to close after a specific number of seconds. A download kit with the script modified for that functionality, including instructions and sample html, is available here. - etLux

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==============================================================
Script:     Auto-Sizing Image Popup Window

Functions:  Use this script to launch a popup window that
            automatically loads an image and resizes itself
            to fit neatly around that image. The script also
            places a title you set in the titlebar of the 
            popup window. Any number of images can be launched
            from a single instance of the script.
            
Browsers:   NS6-7 & IE4 and later
            [Degrades functionally in NS4]

Author:     etLux
==============================================================

STEP 1.
Inserting the JavaScript <script> In Your Page

Insert the following script in the <head>...</head> part
of your page. Take special care not to break any of the lines;
they must be exactly as shown.

Set the variables as per the instructions in the script.

// Script Source: CodeLifter.com
// Copyright 2003
// Do not remove this notice.

// SETUPS:
// ===============================

// Set the horizontal and vertical position for the popup

PositionX = 100;
PositionY = 100;

// Set these value approximately 20 pixels greater than the
// size of the largest image to be used (needed for Netscape)

defaultWidth  = 500;
defaultHeight = 500;

// Set autoclose true to have the window close automatically
// Set autoclose false to allow multiple popup windows

var AutoClose = true;

// Do not edit below this line...
// ================================
if (parseInt(navigator.appVersion.charAt(0))>=4){
var isNN=(navigator.appName=="Netscape")?1:0;
var isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;}
var optNN='scrollbars=no,width='+defaultWidth+',height='+defaultHeight+',left='+PositionX+',top='+PositionY;
var optIE='scrollbars=no,width=150,height=100,left='+PositionX+',top='+PositionY;
function popImage(imageURL,imageTitle){
if (isNN){imgWin=window.open('about:blank','',optNN);}
if (isIE){imgWin=window.open('about:blank','',optIE);}
with (imgWin.document){
writeln('<html><head><title>Loading...</title><style>body{margin:0px;}</style>');writeln('<sc'+'ript>');
writeln('var isNN,isIE;');writeln('if (parseInt(navigator.appVersion.charAt(0))>=4){');
writeln('isNN=(navigator.appName=="Netscape")?1:0;');writeln('isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;}');
writeln('function reSizeToImage(){');writeln('if (isIE){');writeln('window.resizeTo(300,300);');
writeln('width=300-(document.body.clientWidth-document.images[0].width);');
writeln('height=300-(document.body.clientHeight-document.images[0].height);');
writeln('window.resizeTo(width,height);}');writeln('if (isNN){');       
writeln('window.innerWidth=document.images["George"].width;');writeln('window.innerHeight=document.images["George"].height;}}');
writeln('function doTitle(){document.title="'+imageTitle+'";}');writeln('</sc'+'ript>');
if (!AutoClose) writeln('</head><body bgcolor=000000 scroll="no" onload="reSizeToImage();doTitle();self.focus()">')
else writeln('</head><body bgcolor=000000 scroll="no" onload="reSizeToImage();doTitle();self.focus()" onblur="self.close()">');
writeln('<img name="George" src='+imageURL+' style="display:block"></body></html>');
close();		
}}

</script>

==============================================================

STEP 2.
Calling the Image Popup from Links in Your Page

This is the form of the function:

popImage("url_of_image","title_of_image")

Use the relative or absolute path of the image where we show
url_of_image.  This is the url of the image you wish to show
in the auto-sizing popup window.

Use any text you wish where we show title_of_image. This is 
the title that will appear in the titlebar of the popup. (Note:
do not use single- or double-quotes within a title.)

Caution:  Be careful to place both values within quotes.
See the samples below.

Example 1:  Launching from a text link

<a href="javascript:popImage('http://SomeSite.com/SomeImage.gif','Some Title')">
Click Here
</a>

Example 2:  Launching from an image link

Example 3:  Launching from a form button

============================[end]=============================

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