aValue = getQueryVariable("aid");
fValue = getQueryVariable("fid");

if (aValue == undefined) {
	aValue = 1;
}
if (fValue == undefined) {
	fValue = 1;
}

function getQueryVariable(variable) {
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    if (pair[0] == variable) {
	 	valor = pair[1];
      return valor;
    }
  } 
}