// JavaScript Document
function ltrimr(chain)
{
	var trimmer, trimtemp;
//	alert("ltrimr-1: £" + chain + "£");
//cercar blancs per l'esquerra
	trimmer=chain;
	while(trimmer.charAt(0)==" ") {		
		trimmer = trimmer.substring(1, trimmer.length);
		//alert("ltrimr-2: £"+ trimmer + "£");
	}
//cercar blancs per la dreta
	while(trimmer.charAt(trimmer.length-1)==" ") {
		trimmer = trimmer.substring(0, trimmer.length-1);
		//alert("ltrimr-3: £"+ trimmer + "£");

	}
	//alert("ltrimr-4: £"+ trimmer + "£");
	return trimmer;

}

function splitcookie(chain)
{
	var ifor, chisum, chinam, chival, zchain, zz, xx;
	zchain = document.cookie;
	chisum = zchain.split(";");
	chival = 0;
	for(ifor=0;ifor<chisum.length-1;ifor++) {
		//alert("£" + chisum[ifor] + "£");
		zz = chisum[ifor].indexOf("=");
		chinam = ltrimr(chisum[ifor].substring(0,zz));
		//alert("chinam: £" + chinam + "£ chival: £" + chival + "£ chain: £" + chain + "£");
		if(chinam == chain) {
			chival = ltrimr(chisum[ifor].substring(zz+1));
//			alert("surto");
			break;
		}
		else {
//			alert("no hi es");
			chival=0;
		}	
	}
	//alert(chain + " - " + chival);
	return chival;
}
function caducity()
{
	var exp = new Date();
	var nowPlusOneWeek = exp.getTime() + (90*24*60*60*1000);
	exp.setTime(nowPlusOneWeek);
	return exp.toGMTString();

}
function aug_font()
{
	var n=document.getElementById('pepe'); 
	var s=parseInt(n.style.fontSize); 
	s = s+1; 
	n.style.fontSize=s+'px';
	document.cookie="font_base=" + s + "; expires=" + caducity() + ";";
	//alert(splitcookie("font_base"));

}
function rest_font()
{
	var n=document.getElementById('pepe'); 
	var s=parseInt(n.style.fontSize); 
	s = 11; 
	n.style.fontSize=s+'px';
	document.cookie="font_base="+ s +"; expires=" + caducity() + ";";
}
function set_font()
{
	var setix, n;
	setix = splitcookie('font_base');
	if(setix == 0){ 		
		setix = 11;
	}
	n=document.getElementById('pepe'); 
	n.style.fontSize = setix+'px';
}

   
function cambiarDisplay(idCapa) {
  if (!document.getElementById) return false;
  fila = document.getElementById(idCapa);
  if (fila.style.display != "none") {
    fila.style.display = "none"; //ocultar fila 
  } else {
    fila.style.display = ""; //mostrar fila 
  }
}
 
function mostrar(nombreCapa){ 
document.getElementById(nombreCapa).style.display=""; 
document.getElementById(nombreCapa-1).style.display="none";
} 
function ocultar(nombreCapa){ 
document.getElementById(nombreCapa).style.display="none"; 
document.getElementById(nombreCapa-1).style.display=""; 
}