var offsetxpoint	= -60; //Customize x offset of tooltip
var offsetypoint	= 20; //Customize y offset of tooltip
var ie				= document.all;
var ns6				= document.getElementById && !document.all;
var enabletip		= false;

var tipobj;

function init() {
	if (ie || ns6) {
		tipobj = document.all
			? document.all['dhtmltooltip']
			: document.getElementById
				? document.getElementById('dhtmltooltip')
				: '';
	}
}

function ietruebody() {
	return (document.compatMode && document.compatMode != 'BackCompat')
		? document.documentElement
		: document.body;
}

function ddrivetip(thetext, thecolor, thewidth) {
	if (ns6 || ie) {
		if (typeof thewidth != 'undefined')
			tipobj.style.width=thewidth+'px';
		if (typeof thecolor != 'undefined' && thecolor != '')
			tipobj.style.backgroundColor = thecolor;

		tipobj.innerHTML = thetext;
		enabletip = true;
		return false;
	}
}

function positiontip(e) {
	if (enabletip) {
		var curX=(ns6) ? e.pageX : event.x+ietruebody().scrollLeft;
		var curY=(ns6) ? e.pageY : event.y+ietruebody().scrollTop;

		//Find out how close the mouse is to the corner of the window
		var rightedge = ie && !window.opera
			? ietruebody().clientWidth-event.clientX-offsetxpoint
			: window.innerWidth-e.clientX-offsetxpoint-20;

		var bottomedge = ie && !window.opera
			? ietruebody().clientHeight-event.clientY-offsetypoint
			: window.innerHeight-e.clientY-offsetypoint-20;

		var leftedge=(offsetxpoint < 0) ? offsetxpoint * (-1) : -1000;

		//if the horizontal distance isn't enough to accomodate the width of the context menu
		if (rightedge < tipobj.offsetWidth) {
			//move the horizontal position of the menu to the left by it's width
			tipobj.style.left = ie
				? ietruebody().scrollLeft+event.clientX-tipobj.offsetWidth+'px'
				: window.pageXOffset+e.clientX-tipobj.offsetWidth+'px';
		} else if (curX < leftedge) {
			tipobj.style.left = '5px';
		} else {
			//position the horizontal position of the menu where the mouse is positioned
			tipobj.style.left=curX+offsetxpoint+'px';
		}

		//same concept with the vertical position
		if (bottomedge < tipobj.offsetHeight) {
			tipobj.style.top = ie
				? ietruebody().scrollTop+event.clientY-tipobj.offsetHeight-offsetypoint+'px'
				: window.pageYOffset+e.clientY-tipobj.offsetHeight-offsetypoint+'px';
		} else {
			tipobj.style.top=curY+offsetypoint+'px';
		}
		tipobj.style.visibility='visible';
	}
}

function hideddrivetip() {
	if (ns6 || ie) {
		enabletip = false;
		tipobj.style.visibility = 'hidden';
		tipobj.style.left = '-1000px';
		tipobj.style.backgroundColor = '';
		tipobj.style.width = '';
	}
}

document.onmousemove = positiontip;