function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
  createCookie("style", title, 365);
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

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+"; path=/";
}

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;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);

function desplegar(cual) {
	x=document.getElementById("ind"+cual);
	y=document.getElementById("indicaciones"+cual);
	i0=document.getElementById("ind0"+cual);
	i1=document.getElementById("ind1"+cual);
	if(x.style.display != "block"){
		x.style.display="block";
		y.className="indicaciones1";
		i0.style.display="none";
		i1.style.display="inline";
	}else{
		x.style.display="none";
		y.className="indicaciones0";
		i0.style.display="inline";
		i1.style.display="none";
  }
}

function pop(url,name,features, myWidth, myHeight, isCenter) {
	if(window.screen)if(isCenter)if(isCenter=="1") {
		var myLeft = (screen.width-myWidth)/2;
		var myTop = (screen.height-myHeight)/2;
		features+=(features!='')?',':'';
		features+=',left='+myLeft+',top='+myTop;
	}
	flop=window.open(url,name,features+((features!='')?',':'')+'width='+myWidth+',height='+myHeight);
	flop.focus();
}

function imprimir(cual){
  pop('print/imprimir'+cual+'.htm', 'imprimir', 'menubar=1', 'scrollbars=1', 600, 400, 1);
}

function imprimirpage() {
	window.print();  
}