var _GET = {};

function readURL() 
{
  var tLoc = "", tPairs = "";
  var tGet = [];
  var foundGet = -1;
  tLoc = window.location + "";
  foundGet = tLoc.indexOf('?');
  if (foundGet > -1) 
  {
  tLoc = tLoc.substring(foundGet + 1, tLoc.length);
  tPairs = tLoc.split('&');
  for (var i = 0; i < tPairs.length; i++) 
    {
    tGet = tPairs[i].split('=');
    _GET[tGet[0]] = tGet[1];
    }
  }
}

readURL();

//alert(_GET['name']);
//alert(_GET.name);

function existe_arg ( arg ) 
{
  var r = 0;
  if ( _GET[arg] )
      {
      r = 1;
      }
  return (r);
}