/*************************************************************************
  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();
  }
  
}