var offsetxpoint=10; //Customize x offset of tooltip
var offsetypoint=10;//Customize y offset of tooltip
var ie=document.all;
var ns6=document.getElementById && !document.all;
var enabletip=false;
var currobj=null;

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

function showtip(tipid)
{
	if (ie||ns6)
	{
		var theid = "tip_" + tipid;
		currobj=document.all? document.all[theid] : document.getElementById? document.getElementById(theid) : "";
		enabletip=true;
	}
}

function hidetip(tipid)
{
	if (ie||ns6)
	{
		enabletip=false;
		currobj.style.visibility="hidden"
		currobj.style.left="-1000px"
	}
}


function positiontip(e)
{
	if (enabletip)
	{
		var tipobj=currobj;
		
		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"
	}
}

document.onmousemove=positiontip;