How to Compress SWFObject with YUI Compressor

Compressing the swfobject.js v2.2 source file

1. Download the latest version of the YUI Compressor
2. Unzip the yuicompressor-x.x.x.zip file
3. Compress this file (for more info, please read the YUI Compressor documentation), e.g.:

java -jar /yuicompressorpath/yuicompressor-2.3.5/build/yuicompressor-2.3.5.jar -o /swfobjectpath/swfobject.js /swfobjectpath/src/swfobject.js

Compressing the swfobject.js v2.1 source file

1. Download the latest version of the YUI Compressor

2. Unzip the yuicompressor-x.x.x.zip file

3. Open the uncompressed swfobject.js file in a text or code editor and remove the following conditional compiling directives and JavaScript code (line 85-92):

   /@cc_on ie = true; @if (@_win32) windows = true; @elif (@_mac) mac = true; @end @/

4. Save your adjusted uncompressed swfobject.js file

5. Compress this file (for more info, please read the YUI Compressor documentation), e.g.:

   java -jar /yuicompressorpath/yuicompressor-2.3.5/build/yuicompressor-2.3.5.jar -o /swfobjectpath/swfobject.js /swfobjectpath/src/swfobject.js

6. Open the compressed swfobject.js file

7. You have to re-add the Internet Explorer conditional compiling directives and the JavaScript code it embodies (this is a proprietary feature test to check e.g. whether a browser is Internet Explorer). For SWFObject 2.0 paste the following code block:

   /@cc_on i=true;@if(@_win32)q=true;@elif(@_mac)m=true;@end@/

In between:

	... i=false,q=j?/win/.test(j):/win/.test(v),m=j?/mac/.test(j):/mac/.test(v);

And:

	return{w3cdom:l,pv:t,webkit:r,ie:i,win:q,mac:m}}(); ...

For *SWFObject 2.1* paste the following code block:

	/*@cc_on q=true;@if(@_win32)z=true;@elif(@_mac)w=true;@end@*/

In between:

	... q=false,z=r?/win/.test(r):/win/.test(AD),w=r?/mac/.test(r):/mac/.test(AD);

And:

	return{w3cdom:v,pv:AC,webkit:AA,ie:q,win:z,mac:w}}(); ...

8. Save your adjusted compressed swfobject.js file