// www.trekdinner-bamberg.de - tooltip-Funktionen:

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

if(ie || ff) {
	var tipobj = document.all ? document.all["tooltip_text"] :
					document.getElementById ? document.getElementById("tooltip_text") : "";
}

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

function tip_show(thetext, thecolor, thewidth) {
	if(ff || 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 = (ff) ? e.pageX : event.clientX+ietruebody().scrollLeft;
		var curY = (ff) ? e.pageY : event.clientY+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 tip_hide(){
	if (ff || ie) {
		enabletip = false;
		tipobj.style.visibility = "hidden";
		tipobj.style.left = "-1000px";
		tipobj.style.backgroundColor = '';
		tipobj.style.width = '';
	}
}

document.onmousemove = positiontip;