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aznprncritic on 02/04/07

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Last Edited at 02/04/07 07:21pm

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Dynamic Resolution Dependent Layoutout

/ Published in: JavaScript

A great script that will serve up stylesheets based on browser viewport size.

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// - - - - - - - - - - - - - - - - - - - - -
//
// 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 Thin CSS Rules
	if (browserWidth < 750){
		changeLayout("thin");
	}
	//Load Wide CSS Rules
	if ((browserWidth >= 750) && (browserWidth <= 950)){
		changeLayout("wide");
	}
	//Load Wider CSS Rules
	if (browserWidth > 950){
		changeLayout("wider");
	}
}

// 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);

URL: http://particletree.com

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