vtip.css

(function($) {
	var isInternetExplorer = (-1 != navigator.userAgent.indexOf("MSIE"));
	if (!isInternetExplorer) {
		this.xOffset = -10; // x distance from mouse
		this.yOffset = 28; // y distance from mouse

		$(".vtip").unbind().hover(
			function(e) {
				this.t = this.title;
				this.title = '';~
				this.top = (e.pageY + yOffset); this.left = (e.pageX + xOffset);

				$('body').append( '<p id="vtip"><img id="vtipArrow" />' + this.t + '</p>' );

				$('p#vtip #vtipArrow').attr("src", '/images/vtip-arrow.png');
				$('p#vtip').css("top", (this.top)+"px").css("left", this.left+"px").fadeIn("slow");
			},
			function() {
				this.title = this.t;
				$("p#vtip").fadeOut("slow").remove();
			}
		).mousemove(
			function(e) {
				this.top = (e.pageY + yOffset);
				this.left = (e.pageX + xOffset);

				$("p#vtip").css("top", this.top+"px").css("left", this.left+"px");
			}
		);
	}
})(jQuery);

IE 除外しなくてもよさそう。