// - - - - - - - - - - - - - - - - - - - - -
//
// 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;
			}


	function getBrowserHeight(){
		
					if (window.innerHeight){
			return window.innerHeight;}	
		else if (document.documentElement && document.documentElement.clientHeight != 0){
			return document.documentElement.clientHeight;	}
		else if (document.body){return document.body.clientHeight;}		
			return 0;
	}

// dynamicLayout by Kevin Hale
function dynamicLayout(){
	
	var browserWidth = getBrowserWidth();
	var browserHeight = getBrowserHeight()+170;
	
changeLayout(browserWidth, browserHeight);
	
}

// changeLayout is based on setActiveStyleSheet function by Paul Sowdon 
// http://www.alistapart.com/articles/alternate/
function changeLayout(valor, valor1){
	
   var a;
   a= document.getElementById("pop_up");
   
   if(((valor-500)/2)>15)
	 a.style.left = ((valor-500)/2)+ 'px';
	else
	a.style.left = 15+ 'px';
	
	if(((valor1-500)/2)>15)
	 a.style.top = ((valor1-500)/2)+ 'px';
	else
	a.style.top = 15+ 'px';

	}
	

	//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);
	dynamicLayout();