2
hmm the problem has been actually solved. jquery stumbled upon the multisite code insertions in mainfile:
include_once XOOPS_ROOT_PATH."/modules/multisite/pre.load.php";
if (!isset($xoopsOption["nocommon"]) && XOOPS_ROOT_PATH != "") {
include XOOPS_ROOT_PATH."/include/common.php";
}
include_once XOOPS_ROOT_PATH."/modules/multisite/post.load.php";
include_once XOOPS_ROOT_PATH."/modules/multisite/post.define.load.php";
commenting those solved the problem.
Mind anchors