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

  dw_viewport.js
  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
  Permission granted to use this code
  as long as this entire notice is included.

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

var viewport = {
  getWinWidth: function () {
    this.width = 0;
    if (window.innerWidth) this.width = window.innerWidth - 18;
    else if (document.documentElement && document.documentElement.clientWidth)
  		this.width = document.documentElement.clientWidth;
    else if (document.body && document.body.clientWidth)
  		this.width = document.body.clientWidth;
  },

  getWinHeight: function () {
    this.height = 0;
    if (window.innerHeight) this.height = window.innerHeight - 18;
  	else if (document.documentElement && document.documentElement.clientHeight)
  		this.height = document.documentElement.clientHeight;
  	else if (document.body && document.body.clientHeight)
  		this.height = document.body.clientHeight;
  },

  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.getWinWidth(); this.getWinHeight();
    this.getScrollX();  this.getScrollY();
  }

}

/*************************************************************************
  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 tickers = {
  timer: null,
  activeTickerID: null,
  offX: -370,   // horizontal offset
  offY: 0,   // vertical offset
  show: function(id, e) {
    var mnu = document.getElementById? document.getElementById(id): null;
    if (!mnu) return;
    this.activeTickerID = id;
    if ( mnu.onmouseout == null ) mnu.onmouseout = this.mouseoutCheck;
    if ( mnu.onmouseover == null ) mnu.onmouseover = this.clearTimer;
    viewport.getAll();
    this.position(mnu,e);
  },

  hide: function() {
    this.clearTimer();
    if (this.activeTickerID && document.getElementById)
      this.timer = setTimeout("document.getElementById('"+tickers.activeTickerID+"').style.visibility = 'hidden'", 200);
  },

  position: function(mnu, e) {
    var x = e.pageX? e.pageX: e.clientX + viewport.scrollX;
    var y = e.pageY? e.pageY: e.clientY + viewport.scrollY;


    if ( x + mnu.offsetWidth + this.offX > viewport.width + viewport.scrollX )
      x = x - mnu.offsetWidth - this.offX;
    else x = x + this.offX;

    if ( y + mnu.offsetHeight + this.offY > viewport.height + viewport.scrollY )
      y = ( y - mnu.offsetHeight - this.offY > viewport.scrollY )? y - mnu.offsetHeight - this.offY : viewport.height + viewport.scrollY - mnu.offsetHeight;
    else y = y + this.offY;
    mnu.style.left = x + "px"; mnu.style.top = y + "px";
    this.timer = setTimeout("document.getElementById('" + tickers.activeTickerID + "').style.visibility = 'visible'", 200);
  },

  mouseoutCheck: function(e) {
    e = e? e: window.event;
    // is element moused into contained by menu? or is it menu (ul or li or a to menu div)?
    var mnu = document.getElementById(tickers.activeTickerID);
    var toEl = e.relatedTarget? e.relatedTarget: e.toElement;
    if ( mnu != toEl && !tickers.contained(toEl, mnu) ) tickers.hide();
  },

  // returns true of oNode is contained by oCont (container)
  contained: function(oNode, oCont) {
    if (!oNode) return; // in case alt-tab away while hovering (prevent error)
    while ( oNode = oNode.parentNode )
      if ( oNode == oCont ) return true;
    return false;
  },

  clearTimer: function() {
    if (tickers.timer) clearTimeout(tickers.timer);
  }

}