var offsetxpoint=-2; //Customize x offset of tooltip
var offsetypoint=19; //Customize y offset of tooltip
var enabletip=false;
var tipobj;
	
function ietruebody() {
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body;
}

function ddrivetip(thetext){
	if (titleSupport()) {
		tipobj.innerHTML=thetext;
		enabletip=true;
		return false;
	}
}

function positiontip(e){
	if (enabletip){
		var curX=(Browser.nav6DOM)?e.pageX : event.x+ietruebody().scrollLeft;
		var curY=(Browser.nav6DOM)?e.pageY : event.y+ietruebody().scrollTop;
		//Find out how close the mouse is to the corner of the window
		var rightedge=Browser.ieDOM&&!Browser.opera? ietruebody().clientWidth-event.clientX-offsetxpoint : window.innerWidth-e.clientX-offsetxpoint-20;
		var bottomedge=Browser.ieDOM&&!Browser.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=Browser.ieDOM? 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=Browser.ieDOM? 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 (titleSupport()){
		enabletip=false;
		tipobj.style.visibility="hidden";
		tipobj.style.left="-1000px";
		tipobj.style.backgroundColor='';
		tipobj.style.width='';
	}
}

function titleSupport() {
	return Browser.safari;
}

function tooltipinit() {
	if (onloadFunc) onloadFunc;
	if (Browser.ieDOM||Browser.nav6DOM) {
		tipobj=Browser.ieDOM?document.all["dhtmltooltip"]:Browser.nav6DOM?document.getElementById("dhtmltooltip"):"";
	}
	var tooltip, img;
	for (i=0;i<document.images.length;i++) {
	  img = document.images[i];
    tooltip = img.alt?img.alt:img.title;
    if (tooltip) {
	 		img.onmouseover = new Function("ddrivetip('" + tooltip + "')");
  		img.onmouseout = hideddrivetip;
		}
	}
}

document.onmousemove=positiontip;

if (titleSupport()) {
	var onloadFunc = window.onload;
	window.onload = tooltipinit;
}