// Copyright (C) 2007 Rod Roark <rod@sunsetsystems.com>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.

// See interface/patient_file/history/encounters.php for an example of
// implementing tooltips with this module.

// Helper functions.
function getX(elem) {
 var x = 0;
 while(elem != null) {
  x += elem.offsetLeft;
  elem = elem.offsetParent;
 }
 return x;
}
function getY(elem) {
 var y = 0;
 while(elem != null) {
  y += elem.offsetTop;
  elem = elem.offsetParent;
 }
 return y;
}

// onmouseover handler.
function ttshow(elem, tttext) {
 var ttobject = document.getElementById("tooltipdiv");
 ttobject.innerHTML = tttext;
 var x = getX(elem);
 var dw = window.innerWidth ? window.innerWidth - 20 : document.body.clientWidth;
 if (dw && dw < (x + ttobject.offsetWidth)) {
  x = dw - ttobject.offsetWidth;
  if (x < 0) x = 0;
 }
 var y = getY(elem) - ttobject.offsetHeight - 10;
 if (y < 0) y = getY(elem) + elem.offsetHeight + 10;
 ttobject.style.left = x;
 ttobject.style.top  = y;
 ttobject.style.visibility='visible';
 return false;
}

// onmouseout handler.
function tthide() {
 var ttobject = document.getElementById("tooltipdiv");
 ttobject.style.visibility='hidden';
 ttobject.style.left = '-1000px';
}