Flickr iMacro script to invite all your Flickr friends to a group

There was no automatic way to invite all your friends to join a group so I knocked up this quick script to take you from any group main page to the invite page, extract your list of friends (and no other contacts) and then send off the invite. The invite only goes to friends not yet in the group and not previously invited so you will not be bugging them with unwanted spam.

Note that more than 500 friends may result in time-out errors waiting for Flickr to respond. In this situation you may be better off inviting a few hundred at a time by recording an iMacro selecting the first checkbox on the invite page, then generalize it by removing the ATTR=NAME: and copy that line 200 times but change POS=1 to POS=R1 so that the next checkbox relative to the cursor position is ticked each time. When you've trimmed to a more manageable number then this script can apply again.

[JavaScript source code START]

/*
Description:
JavaScript for iMacro to create a block invite for all your 
friends (but not family or other contacts) to join a Flickr group.
For more information see http://useroffline.blogspot.com

Assumptions:
- You have iMacro installed.
- You have your group's main page currently displayed.

Why:
There is no block invite facility built into Flickr.
*/

// Get friends list
var friendArr=new Array();
iimPlay("CODE:\
TAG POS=1 TYPE=A ATTR=TXT:Invite\n\
TAG POS=1 TYPE=A ATTR=TXT:Choose<SP>from<SP>your<SP>contacts?\n\
TAG POS=5 TYPE=TR EXTRACT=HTM\
");
// Tidy up extracted data
friendArr=iimGetLastExtract(1).split("name=\"");
friendArr.splice(0,1);
for(i in friendArr){
friendArr[i]=friendArr[i].split("\"")[0];
friendArr[i]="TAG POS=1 TYPE=INPUT:CHECKBOX ATTR=NAME:"+friendArr[i]+" CONTENT=YES";
}
iimPlay("CODE:"+
"' Total no. of friends = "+friendArr.length+"\n"+
friendArr.join("\n"));
// Send the message
iimPlay("CODE:\
TAG POS=1 TYPE=INPUT:SUBMIT ATTR=NAME:Submit&&VALUE:PREVIEW*\n\
TAG POS=1 TYPE=INPUT:SUBMIT ATTR=NAME:done_send&&VALUE:SEND*\
");

[JavaScript source code END]