// PARA CAMBIAR FUENTE
function changeFontSize(id,size){
    var obj=document.getElementById(id); 
    obj.style.fontSize = size; 
}

function getCookie (name) {
 var arg = name + "=";
 var alen = arg.length;
 var clen = document.cookie.length;
 var i = 0;
 while (i < clen) {
  var j = i + alen;
  if (document.cookie.substring(i, j) == arg)
  return getCookieVal (j);
  i = document.cookie.indexOf(" ", i) + 1;
  if (i == 0) 
  break; 
}
return null;    
}

function getCookieVal (offset) {
 var endstr = document.cookie.indexOf (";", offset);
   if (endstr == -1)
   endstr = document.cookie.length;
   return unescape(document.cookie.substring(offset, endstr));
}

function openWindow(pgn, ancho, alto, scrollbars, resizable) {
	derecha=(screen.width-ancho)/2;
	arriba=(screen.height-alto)/2;
	if(resizable==true)
		resizable = 1;
	else
		resizable = 0;
	if(scrollbars==true)
		scrollbars = 1;
	else
		scrollbars = 0;
	string="toolbar=0,scrollbars="+scrollbars+",location=0,statusbar=0,menubar=0,resizable="+resizable+",width="+ancho+",height="+alto+",left="+derecha+",top="+arriba+"";
	fin=window.open(pgn,"ventana", string);
}