// - - - - - - - - - - - - - - - - - - - - -
//
// Title : Dynamic Resolution Dependent Layout Demo
// Author : Kevin Hale
// URL : http://particletree.com
//
// Description : This is a demonstration of a dynamic 
// resolution dependent layout in action. Change your browser 
// window size to see the layout respond to your changes. To 
// preserve the separation of the presentation and behavior 
// layers, this implementation delegates all the presentation 
// details to external CSS stylesheets instead of changing 
// each style property through JavaScript.
//
// Created : July 30, 2005
// Modified : November 15, 2005
//
// - - - - - - - - - - - - - - - - - - - - -

// getBrowserWidth is taken from The Man in Blue Resolution Dependent Layout Script
// http://www.themaninblue.com/experiment/ResolutionLayout/
	function getBrowserWidth(){
		if (window.innerWidth){
			return window.innerWidth;}
		else if (document.documentElement && document.documentElement.clientWidth != 0){
			return document.documentElement.clientWidth;	}
		else if (document.body){return document.body.clientWidth;}
			return 0;
	}

// dynamicLayout by Kevin Hale
function dynamicLayout(){
	var browserWidth = getBrowserWidth();

	//Load smaller CSS Rules
	if (browserWidth < 1000){
		changeLayout("smaller");
	}
    //Load small CSS Rules
	if ((browserWidth >= 1000) && (browserWidth <= 1140)){
		changeLayout("small");
	}
    //Load medium CSS Rules
	if ((browserWidth > 1140) && (browserWidth <= 1370)){
		changeLayout("medium");
	}
	//Load large CSS Rules
	if (browserWidth > 1370){
		changeLayout("large");
	}
}

// changeLayout is based on setActiveStyleSheet function by Paul Sowdon
// http://www.alistapart.com/articles/alternate/
function changeLayout(description){
   var i, a;
   for(i=0; (a = document.getElementsByTagName("link")[i]); i++){
	   if(a.getAttribute("title") == description){a.disabled = false;}
	   else if(a.getAttribute("title") != "default"){a.disabled = true;}
   }
}

	//addEvent() by John Resig
	function addEvent( obj, type, fn ){
	   if (obj.addEventListener){
	      obj.addEventListener( type, fn, false );
	   }
	   else if (obj.attachEvent){
	      obj["e"+type+fn] = fn;
	      obj[type+fn] = function(){ obj["e"+type+fn]( window.event ); }
	      obj.attachEvent( "on"+type, obj[type+fn] );
	   }
	} 
	
	//Run dynamicLayout function when page loads and when it resizes.
	addEvent(window, 'load', dynamicLayout);
    addEvent(window, 'resize', dynamicLayout);