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



  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();

  }

  

}