var OP = (navigator.userAgent.indexOf('Opera') != -1);
var IE = (navigator.userAgent.indexOf('MSIE') != -1 && !OP);
var GK = (navigator.userAgent.indexOf('Gecko') != -1);
var SA = (navigator.userAgent.indexOf('Safari') != -1);
var DOM = document.getElementById;

var tooltip = null;

function TOOLTIP() {
  this.width = 20; 
  this.bgColor = "#F1F1F1";
  this.textFont = "Verdana"; 
  this.textSize = 12; 
  this.textColor = "#333";  
  this.border = "1px solid #c3c3c3";   
  this.opacity = 90;    
  this.cursorDistance = 5;
  this.text = '';
  this.height = 0;
  this.obj = null;
  this.active = false;

  this.create = function() {
    if(!this.obj) this.init();


    var t = '<div class=help>' + this.text +
            '</div>';

    if(DOM || IE) this.obj.innerHTML = t;
    if(DOM) this.height = this.obj.offsetHeight;
    else if(IE) this.height = this.obj.style.pixelHeight;
    if(this.bgColor) this.obj.style.backgroundColor = this.bgColor;

    this.setOpacity();
    this.move();
    this.show();
  }

  this.init = function() {
    if(DOM) this.obj = document.getElementById('ToolTip');
    else if(IE) this.obj = document.all.ToolTip;
  }

  this.move = function() {
    var winX = getWinX() - (((GK && !SA) || OP) ? 17 : 0);
    var winY = getWinY() - (((GK && !SA) || OP) ? 17 : 0);
    var x = mouseX;
    var y = mouseY;

    if(x + this.width + this.cursorDistance > winX + getScrX())
      x -= this.width + this.cursorDistance;
    else x += this.cursorDistance;

    if(y + this.height + this.cursorDistance > winY + getScrY())
      y -= this.height;
    else y += this.cursorDistance;

    this.obj.style.left = x + 'px';
    this.obj.style.top = y + 'px';
  }
  this.show = function() {
    this.obj.style.zIndex = 69;
    this.active = true;
    this.obj.style.visibility = 'visible';
  }

  this.hide = function() {
    this.obj.style.zIndex = -1;
    this.active = false;
    this.obj.style.visibility = 'hidden';
  }

  this.setOpacity = function() {
    this.obj.style.opacity = this.opacity / 100;
    this.obj.style.MozOpacity = this.opacity / 100;
    this.obj.style.KhtmlOpacity = this.opacity / 100;
    this.obj.style.filter = 'alpha(opacity=' + this.opacity + ')';
  }
}
function getScrX() {
  var offset = 0;
  if(window.pageXOffset)
    offset = window.pageXOffset;
  else if(document.documentElement && document.documentElement.scrollLeft)
    offset = document.documentElement.scrollLeft;
  else if(document.body && document.body.scrollLeft)
    offset = document.body.scrollLeft;
  return offset;
}
function getScrY() {
  var offset = 0;
  if(window.pageYOffset)
    offset = window.pageYOffset;
  else if(document.documentElement && document.documentElement.scrollTop)
    offset = document.documentElement.scrollTop;
  else if(document.body && document.body.scrollTop)
    offset = document.body.scrollTop;
  return offset;
}
function getWinX() {
  var size = 0;
  if(window.innerWidth)
    size = window.innerWidth;
  else if(document.documentElement && document.documentElement.clientWidth)
    size = document.documentElement.clientWidth;
  else if(document.body && document.body.clientWidth)
    size = document.body.clientWidth;
  else size = screen.width;
  return size;
}
function getWinY() {
  var size = 0;
  if(window.innerHeight)
    size = window.innerHeight;
  else if(document.documentElement && document.documentElement.clientHeight)
    size = document.documentElement.clientHeight;
  else if(document.body && document.body.clientHeight)
    size = document.body.clientHeight;
  else size = screen.height;
  return size;
}
function getMouseXY(e) {
  if(e && e.pageX != null) {
    mouseX = e.pageX;
    mouseY = e.pageY;
  }
  else if(event && event.clientX != null) {
    mouseX = event.clientX + getScrX();
    mouseY = event.clientY + getScrY();
  }
  if(mouseX < 0) mouseX = 0;
  if(mouseY < 0) mouseY = 0;
  if(tooltip && tooltip.active) tooltip.move();
}
function toolTip(text, width, opacity) {
  if(text) {
    tooltip = new TOOLTIP();
    tooltip.text = text;
    if(width) tooltip.width = width;
    if(opacity) tooltip.opacity = opacity;
    tooltip.create();
  }
  else if(tooltip) tooltip.hide();
}
document.write('<div id="ToolTip" style="position:absolute; visibility:hidden"></div>');
var mouseX = mouseY = 0;
document.onmousemove = getMouseXY;