function spSocialBookmarkSetDisplay(spDisplay) {
spSocialBookmarkElement = document.getElementById("spSocialBookmark").style;
spSocialBookmarkElement.visibility = (spDisplay ? "visible" : "hidden");
BookmarkStatus=spDisplay;
}

function spSocialBookmarkToggle() {
if (!BookmarkStatus) {
spSocialBookmarkSetDisplay(true);
}
else 
spSocialBookmarkSetDisplay(false);
}