$(document).ready(function(){	
	$("a.tooltip").live("mouseover", function(){
	    $(this).addClass("tt_active");
		$("#maincontent").css("overflow","visible");
		$("#contextual").css("overflow","visible");
	})
	.live("mouseout", function(){
	    $(this).removeClass("tt_active");
        $("#maincontent").css("overflow","hidden");
		$("#contextual").css("overflow","hidden");
	});
});