// // Simple follow the mouse script
// copyright Stephen Chapman, 30th September 2005
// you may copy this script provided that you retain the copyright notice

var divName = 'popup'; // div that is to follow the mouse
var offX = 15;         // X offset from mouse position
var offY = 15;         // Y offset from mouse position

// no changes required below this line
function mouseX(evt) {
	if (!evt) evt = window.event; 
	if (evt.pageX) return evt.pageX; 
	else if (evt.clientX) return evt.clientX + (document.documentElement.scrollLeft ?  document.documentElement.scrollLeft : document.body.scrollLeft); 
	else return 0;
} 
function mouseY(evt) {
	if (!evt) evt = window.event; 
	if (evt.pageY) return evt.pageY; 
	else if (evt.clientY) return evt.clientY + (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);
	else return 0;
}
function follow(evt) {
	if (document.getElementById) {
		var obj = document.getElementById(divName).style; 
		obj.visibility = 'visible'; 
		obj.left = (parseInt(mouseX(evt))+offX) + 'px';  
		obj.top = (parseInt(mouseY(evt))+offY) + 'px';
	}
} 

function showLayer() {
	document.onmousemove = follow;
}
function hideLayer() {
	document.onmousemove = null;
	document.getElementById(divName).style.visibility='hidden';
}