/*************************************************************************
$Id: hover.js,v 1.9 2007/01/17 03:01:59 andy Exp $
version date: Nov 2003
  
  This code is from Dynamic Web Coding at http://www.dyn-web.com/
  Copyright 2003 by Sharon Paine 
  See Terms of Use at http://www.dyn-web.com/bus/terms.html
  regarding conditions under which you may use this code.
  This notice must be retained in the code as is!

*************************************************************************/

var dw_event = {
  
  add: function(obj, etype, fp, cap) {
    cap = cap || false;
    if (obj.addEventListener) obj.addEventListener(etype, fp, cap);
    else if (obj.attachEvent) obj.attachEvent("on" + etype, fp);
  }, 

  remove: function(obj, etype, fp, cap) {
    cap = cap || false;
    if (obj.removeEventListener) obj.removeEventListener(etype, fp, cap);
    else if (obj.detachEvent) obj.detachEvent("on" + etype, fp);
  }, 

  DOMit: function(e) { 
    e = e? e: window.event;
    e.tgt = e.srcElement? e.srcElement: e.target;
    
    if (!e.preventDefault) e.preventDefault = function () { return false; }
    if (!e.stopPropagation) e.stopPropagation = function () { if (window.event) window.event.cancelBubble = true; }
        
    return e;
  }
  
}
  
viewport = {
  getScrollX: function () {
    this.scrollX = 0;
      if (typeof window.pageXOffset == "number") this.scrollX = window.pageXOffset;
      else if (document.documentElement && document.documentElement.scrollLeft)
          this.scrollX = document.documentElement.scrollLeft;
      else if (document.body && document.body.scrollLeft) 
          this.scrollX = document.body.scrollLeft; 
      else if (window.scrollX) this.scrollX = window.scrollX;
  },
  
  getScrollY: function () {
    this.scrollY = 0;    
    if (typeof window.pageYOffset == "number") this.scrollY = window.pageYOffset;
    else if (document.documentElement && document.documentElement.scrollTop)
          this.scrollY = document.documentElement.scrollTop;
      else if (document.body && document.body.scrollTop) 
          this.scrollY = document.body.scrollTop; 
      else if (window.scrollY) this.scrollY = window.scrollY;
  },
  
  getAll: function () {
    this.width = getWinWidth(); this.height =getWinHeight(); // defined in common.js
    this.getScrollX();  this.getScrollY();
  }
  
}

var Tooltip = {
  offX: 3,
  offY: 8,
  hideOnMouseOut: true,
  align: 'mouse',
  parentElement: null,
  color: '',
  
  ready: false,
  t1: null,
  t2: null,
  tipID: "tipDiv",
  tip: null,
  
  init: function() {
    if ( document.createElement && document.body && typeof document.body.appendChild != "undefined" ) {
      var el = document.createElement("DIV");
      el.className = "tooltip";
      el.id = this.tipID;
      document.body.appendChild(el);
      this.ready = true;
    }
  },
  
  show: function(e, msg) {
    if (this.t1) clearTimeout(this.t1);    
      if (this.t2) clearTimeout(this.t2); 
    this.tip = document.getElementById( this.tipID );
    this.writeTip(msg);
    viewport.getAll();
    this.positionTip(e);
    Rounded("div#tipDiv","all","transparent",Tooltip.color,"border");    
      this.t1 = setTimeout("document.getElementById('" + Tooltip.tipID + "').style.visibility = 'visible'",50);    
    },
    
    writeTip: function(msg) {
      if ( this.tip && typeof this.tip.innerHTML != "undefined" )
      {
        this.tip.innerHTML = "";  // for mac ie
          this.tip.innerHTML = '<div class=tipHTML style="background-color:'+Tooltip.color+';">'+msg+'</div>';
      }
    },
    
    positionTip: function(e) {
      var x; var y;
      if (this.align == 'topright')
      {
           coords = getPageCoords(this.parentElement);
          x = coords.x + this.parentElement.offsetWidth + 2;
          y = coords.y;
        if ( x + this.tip.offsetWidth > viewport.width + viewport.scrollX )
          x = x - this.tip.offsetWidth - this.parentElement.offsetWidth - 4;
        
        if ( y + this.tip.offsetHeight > viewport.height + viewport.scrollY )
          y = y - this.tip.offsetHeight + this.parentElement.offsetHeight;
      }
      else if (this.align == 'center')
      {
          x = viewport.width/2 + viewport.scrollX - this.tip.offsetWidth/2;
          y = viewport.height/2 + viewport.scrollY - this.tip.offsetHeight/2;
      }
    else if (this.align == 'bottomcenter')
    {
     coords = getPageCoords(this.parentElement);
            x = coords.x + this.parentElement.offsetWidth/2 - this.tip.offsetWidth/2;
           y = coords.y + this.parentElement.offsetHeight;
           
           if (x + this.tip.offsetWidth > viewport.width + viewport.scrollX)
            x = viewport.width + viewport.scrollX - this.tip.offsetWidth;  
         if (y + this.tip.offsetHeight > viewport.height + viewport.scrollY)
          y = y - this.parentElement.offsetHeight - this.tip.offsetHeight;
    }
    else //mouse
    {
     x = e.pageX? e.pageX: e.clientX + viewport.scrollX;
     y = e.pageY? e.pageY: e.clientY + viewport.scrollY;
     if ( x + this.tip.offsetWidth + this.offX > viewport.width + viewport.scrollX )
      x = x - this.tip.offsetWidth - this.offX;
     else x = x + this.offX;
        
     if ( y + this.tip.offsetHeight + this.offY > viewport.height + viewport.scrollY )
      y = ( y - this.tip.offsetHeight - this.offY > viewport.scrollY )? y - this.tip.offsetHeight - this.offY : viewport.height + viewport.scrollY - this.tip.offsetHeight;
     else y = y + this.offY;
    }
    if (x < 0) x=0;
    if (y < 0) y=0;
      
      this.tip.style.left = x + "px"; this.tip.style.top = y + "px";
    },
    
    hide: function() {
      if (this.t1) clearTimeout(this.t1);    
        if (this.t2) clearTimeout(this.t2); 
      this.t2 = setTimeout("document.getElementById('" + this.tipID + "').style.visibility = 'hidden'",50);
      this.tip = null;
    },
    
    trackMouse: function(e) {
        e = dw_event.DOMit(e);
         Tooltip.positionTip(e);    
    }
}

function getPageCoords(element) { 
  var coords = {x: 0, y: 0}; 
  do { 
    coords.x += element.offsetLeft; 
    coords.y += element.offsetTop; 
  } 
  while ((element = element.offsetParent)); 
  return coords; 
}

Tooltip.tipOutCheck = function(e) {
  if (!Tooltip.hideOnMouseOut)
      return;
  e = dw_event.DOMit(e);
  // is element moused into contained by tooltip?
  var toEl = e.relatedTarget? e.relatedTarget: e.toElement;
  if ( this != toEl && !contained(toEl, this, e) )
      Tooltip.hide();
}

// returns true of oNode is contained by oCont (container)
function contained(oNode, oCont, e) {
  // some things (iframes) have no oNode
  if (!oNode)
      return true; 
  
  // if we're still in it's container (most likely an href)    
  while ( oNode = oNode.parentNode )
      if ( oNode == oCont )
          return true;
      
  return false;
}

var tip;
function doToolTip(e, msg, hideOnMouseOut, align, parentElement, color, width) {
  
  // need to create the object on the first call
  if (!Tooltip.ready)
  {
        Tooltip.init();
        Tooltip.timerId = 0;
        Tooltip.clearTimer = function() {
          if (Tooltip.timerId) clearTimeout(Tooltip.timerId);
        }
        
        tip = document.getElementById ? document.getElementById(Tooltip.tipID): null;
        if (tip)
        {
          tip.onmouseout = Tooltip.tipOutCheck;
          tip.onmouseover = Tooltip.clearTimer;
        }
  }
  
  // if it's not ready now, we're hosed.
  if ( typeof Tooltip == "undefined" || !Tooltip.ready )
          return;
          
  if (!width)
        width=180;
//  document.getElementById(Tooltip.tipID).style.width=width+'px';
  if (width)
    document.getElementById(Tooltip.tipID).style.width=width+'px';
  if (typeof hideOnMouseOut != "undefined")
      Tooltip.hideOnMouseOut = hideOnMouseOut;
  if (align)
      Tooltip.align = align;
  if (parentElement)
      Tooltip.parentElement = parentElement;
  if (color)
      Tooltip.color = color;
  else
      Tooltip.color = '#f8faff';
  Tooltip.clearTimer();
  
  Tooltip.show(e, msg);

}

function hideTip() {
  if ( typeof Tooltip == "undefined" || !Tooltip.ready ) return;
  Tooltip.timerId = setTimeout("Tooltip.hide()", 300);
}