var offsetfromcursorX = 12; //Customize x offset of tooltip
var offsetfromcursorY = 10; //Customize y offset of tooltip

var offsetdivfrompointerX = 10; //Customize x offset of tooltip DIV relative to pointer image
var offsetdivfrompointerY = 14; //Customize y offset of tooltip DIV relative to pointer image. Tip: Set it to (height_of_pointer_image-1).

document.write('<div id="dhtmltooltip" style="position: absolute;left: -300px;width: 15px;border: 1px dotted blue;padding: 5px;background-color: #FFFEE2;visibility: hidden;z-index: 100;font-family:Verdana, Arial, Helvetica, sans-serif;font-size:11px;"></div>'); //write out tooltip DIV
document.write('<img id="dhtmlpointer" src="js/arrow2.gif" style="position:absolute;left:-300px;z-index: 101;visibility: hidden;">'); //write out pointer image

var ie = document.all;
var ns6 = document.getElementById && !document.all;
var enabletip = false;
if (ie||ns6)
var tipobj = document.all ? document.all["dhtmltooltip"] : document.getElementById ? document.getElementById("dhtmltooltip") : "";

var pointerobj = document.all ? document.all["dhtmlpointer"] : document.getElementById ? document.getElementById("dhtmlpointer") : "";

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

function ddrivetip(thetext, thewidth, thecolor){
	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 nondefaultpos = false;
		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 winwidth = ie && !window.opera ? ietruebody().clientWidth : window.innerWidth-20;
		var winheight = ie && !window.opera ? ietruebody().clientHeight : window.innerHeight-20;

		var rightedge = ie && !window.opera ? winwidth-event.clientX-offsetfromcursorX : winwidth-e.clientX-offsetfromcursorX;
		var bottomedge = ie && !window.opera ? winheight-event.clientY-offsetfromcursorY : winheight-e.clientY-offsetfromcursorY;

		var leftedge = (offsetfromcursorX<0) ? offsetfromcursorX*(-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 = curX-tipobj.offsetWidth+"px";
			nondefaultpos = true;
		}
		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+offsetfromcursorX-offsetdivfrompointerX+"px";
			pointerobj.style.left = curX+offsetfromcursorX+"px";
		}

		//same concept with the vertical position
		if (bottomedge<tipobj.offsetHeight){
			tipobj.style.top = curY-tipobj.offsetHeight-offsetfromcursorY+"px";
			nondefaultpos = true;
		}
		else{
			tipobj.style.top = curY+offsetfromcursorY+offsetdivfrompointerY+"px";
			pointerobj.style.top = curY+offsetfromcursorY+"px";
		}
		tipobj.style.visibility = "visible";
		if (!nondefaultpos) pointerobj.style.visibility = "visible";
		else pointerobj.style.visibility = "hidden";
	}
}

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

document.onmousemove = positiontip;