if (document.layers) { // Netscape
	document.captureEvents(Event.MOUSEMOVE);
	document.onmousemove = captureMousePosition;
} else if (document.all) { // Internet Explorer
	document.onmousemove = captureMousePosition;
} else if (document.getElementById) { // Netcsape 6
	document.onmousemove = captureMousePosition;
}

// Global variables
xMousePos = 0; // Horizontal position of the mouse on the screen
yMousePos = 0; // Vertical position of the mouse on the screen
xMousePosMax = 0; // Width of the page
yMousePosMax = 0; // Height of the page

function captureMousePosition(e) {
	if (document.layers) {
		// When the page scrolls in Netscape, the event's mouse position
		// reflects the absolute position on the screen. innerHight/Width
		// is the position from the top/left of the screen that the user is
		// looking at. pageX/YOffset is the amount that the user has
		// scrolled into the page. So the values will be in relation to
		// each other as the total offsets into the page, no matter if
		// the user has scrolled or not.
		xMousePos = e.pageX;
		yMousePos = e.pageY;
		xMousePosMax = window.innerWidth+window.pageXOffset;
		yMousePosMax = window.innerHeight+window.pageYOffset;
	} else if (document.all) {
		// When the page scrolls in IE, the event's mouse position
		// reflects the position from the top/left of the screen the
		// user is looking at. scrollLeft/Top is the amount the user
		// has scrolled into the page. clientWidth/Height is the height/
		// width of the current page the user is looking at. So, to be
		// consistent with Netscape (above), add the scroll offsets to
		// both so we end up with an absolute value on the page, no
		// matter if the user has scrolled or not.
		if(document.body){
			xMousePos = event.clientX+document.body.scrollLeft;
			yMousePos = event.clientY+document.body.scrollTop;
			xMousePosMax = document.body.clientWidth+document.body.scrollLeft;
			yMousePosMax = document.body.clientHeight+document.body.scrollTop;
		}
	} else if (document.getElementById) {
		// Netscape 6 behaves the same as Netscape 4 in this regard
		xMousePos = e.pageX;
		yMousePos = e.pageY;
		xMousePosMax = window.innerWidth+window.pageXOffset;
		yMousePosMax = window.innerHeight+window.pageYOffset;
	}
}