HTMLソースに埋め込まれる UMS_TOOLTIP とは?

<div id="UMS_TOOLTIP" style="position: absolute; cursor: pointer; z-index: 2147483647; background: transparent; top: -100000px; left: -100000px;"></div></body><umsdataelement id="UMSSendDataEventElement"></umsdataelement><div id="TAG_ID4TOOLBAR_UMS_GUID" style="display: none;">5E1F1732-809B-0A0A-DA76-XXXXXXXXX</div><div id="tmtoolbar_ums_injected" style="display: none;">init_ums</div></html>