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

document.write('<div id="dhtmltooltip"></div>'); //write out tooltip DIV
document.write('<img id="dhtmlpointer">'); //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") : "";	
}

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 curX = (ns6)?e.pageX : event.clientX+ietruebody().scrollLeft;
		var curY = (ns6)?e.pageY : event.clientY+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";
		} 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-offsetfromcursorX+"px";
		}
		
		//same concept with the vertical position
		if (bottomedge<tipobj.offsetHeight){
			tipobj.style.top=curY-tipobj.offsetHeight-offsetfromcursorY+"px";
		} else{
			tipobj.style.top=curY+offsetfromcursorX+offsetfromcursorX+"px";		
		}
		
		tipobj.style.visibility="visible";
	}
}

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

document.onmousemove = positiontip;