Makinero,
http://vk.com/search?c[section]=communities
doesn't has information of digital groups ids. For convert 'group_name' to '123456' need send many request.
If you search groups from page
http://vk.com/groups, you can grab links by this script:
Код:
var arr=ge('groups_list_tab_groups').innerHTML.match(/gl_admin(\d+)/g);
var ids=[];
for (var i=0; i<arr.length; i++){
ids.push(arr[i].match(/gl_admin(\d+)/)[1]);
};
ge('groups_list_tab_groups').innerHTML='http://vk.com/wall-'+ids.join('<br>http://vk.com/wall-');