in enginframe/hydrogen.manage-users.js [603:615]
dialogButtons[buttonLabel] = function () {
var entryFile = jQuery("#file-csv").val();
var entryTextArea = jQuery("#users-csv").val();
if (checkEmpty === true) {
if (entryFile.length === 0 && entryTextArea.length === 0) {
return false;
}
}
jQuery(this).dialog("close");
actionfunc("import-users-form");
};