var browser = (navigator.appName);
var mX = 0, mY = 0;
var sX = 0, sY = 20;
if (browser == "Netscape") {
	window.onmousemove = lfGetMousePoint;
} else {
	document.onmousemove = lfGetMousePoint;
}
function lfGetMousePoint(event_point) {
	if (browser == "Netscape") {
		mX = event_point.pageX;
		mY = event_point.pageY;
	} else {
		mX = event.clientX + document.body.scrollLeft;
		mY = event.clientY + document.body.scrollTop;
	}
}
function lfDispPopup(id_name) {
	popup = document.getElementById(id_name).style;
	popup.visibility = "visible";
	popup.left = mX + sX + "px";
	popup.top = mY + sY + "px";
}
function lfDelPopup(id_name) {
	document.getElementById(id_name).style.visibility = "hidden";
}