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() {
//----------------------------------------------------------------------------------------------------
// Configuration
//----------------------------------------------------------------------------------------------------
  this.width = 250;                     // width (pixels)    
  this.opacity = 100;                    // opacity (0 - 100); doesn't work with all browsers
  this.cursorDistance = 5;              // distance from mouse cursor (pixels)    

  // don't change
  this.text = '';
  this.height = 0;
  this.obj = null;
  this.frame=null;
  this.active = false;

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

    var t = "<table border=0 cellspacing=0 cellpadding=4 width=" + this.width + "><tr>" +
            "<td align='center' class='JSToolTip'>" + this.text +
            "</td></tr></table>";

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

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

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

  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.frame.style.left = x + 'px';
    this.frame.style.top = y + 'px';
    
    this.frame.style.height= this.height;
    this.frame.style.width= this.width;
    
    
    this.obj.style.left = x + 'px';
    this.obj.style.top = y + 'px';
    
    
  }

  this.show = function() {
    this.obj.style.visibility = 'visible';
    this.obj.style.zIndex = 1000;
    this.frame.style.height = '100'
    this.active = true;
  }

  this.hide = function() {
    this.obj.style.visibility = 'hidden';
    this.obj.style.zIndex = -1;
    this.frame.style.height = '0'
    this.active = false;
  }

  this.setOpacity = function() {
    this.obj.style.filter = 'alpha(opacity=' + this.opacity + ')';
    this.obj.style.mozOpacity = '.1';
    if(this.obj.filters) this.obj.filters.alpha.opacity = this.opacity;
    if(!document.all && this.obj.style.setProperty)
      this.obj.style.setProperty('-moz-opacity', this.opacity / 100, '');
  }
}

//----------------------------------------------------------------------------------------------------
// Global functions
//----------------------------------------------------------------------------------------------------
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();
}

//----------------------------------------------------------------------------------------------------
// Build tooltip box
//----------------------------------------------------------------------------------------------------
document.write('<div id="ToolTip" style="position:absolute; visibility:hidden;"></div><iframe id="ToolTipIFrame" src="" class="frmcls" frameborder="0" style="height:0"></iframe>');

//----------------------------------------------------------------------------------------------------
// Event handlers
//----------------------------------------------------------------------------------------------------
var mouseX = mouseY = 0;
document.onmousemove = getMouseXY;

//----------------------------------------------------------------------------------------------------
//Loads Tooltip styles
var style = '.JSToolTip{font-family: Verdana, Arial, Helvetica, sans-serif;text-align: left;font-size: 11px;border: 1px solid #000000;color: #000000;background-color: #FFFFC0;}'
+'.frmcls{position: absolute;z-index: 998;border-style: none;}';
document.write('<'+'style type="text/css"'+'>');
document.write(style);
document.write('<'+'/style'+'>');