// JavaScript Document
function detectar(){
	if (screen.width<1024)    
   activeCSS("800");
else  if (screen.width<1280) 
  activeCSS("1024");
 else
  activeCSS("1024");
}
	
	
window.onload=initCSS;


function initCSS(){
	var style=readCookie("mystyle");
	if(style){
		activeCSS(style);
		}
}


//ESTA ES LA FUNCION PARA CAMBIAR DE HOJA DE ESTILOS	
function activeCSS(title) {
  var i, oneLink;
  for(i=0; (oneLink= document.getElementsByTagName("link")[i]); i++) {
    if(oneLink.getAttribute("title") && findWord("stylesheet",oneLink.getAttribute("rel"))) {
      oneLink.disabled = true;
      if(oneLink.getAttribute("title") == title) {
		  oneLink.disabled = false;
	  }
    }
  }
createCookie("mystyle",title,356);
}


function findWord(aguja,pajar){
	var init=aguja + "\\b";
	return pajar.match(aguja + "\\b");
}



function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+";";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}