var scripts = document.getElementsByTagName('script');
var myScript = scripts[ scripts.length - 1 ];

var queryString = myScript.src.replace(/^[^\?]+\??/,'');

var params = parseQuery( queryString );

function parseQuery ( query ) {
   var Params = new Object ();
   if ( ! query ) return Params; // return empty object
   var Pairs = query.split(/[;&]/);
   for ( var i = 0; i < Pairs.length; i++ ) {
      var KeyVal = Pairs[i].split('=');
      if ( ! KeyVal || KeyVal.length != 2 ) continue;
      var key = unescape( KeyVal[0] );
      var val = unescape( KeyVal[1] );
      val = val.replace(/\+/g, ' ');
      Params[key] = val;
   }
   return Params;
}


function dspgRbanners(fid)
   {
   bannerimages.push('gRdvd/gRdvd|48,0,1019,134|gRdvd|http://www.goldrushrally.com/store');
   //bannerimages.push('delaron/delaron|48,0,1019,134|delaron|http://www.delaron.com/');
   bannerimages.push('bw/bw|48,0,1019,134|bw|http://www.bwrentacar.com/');
   }

//initialize vars here
bannerimages = new Array();  

//call main routine with forum id here
dspgRbanners(params['fid']);

bannerloops = bannerimages.length;
function bannerrandOrd()
    {
    return (Math.round(Math.random())-0.5);
    } 

bannerimages.sort( bannerrandOrd );

displaygRbanner(Math.round(Math.random()*(bannerimages.length-1)));

function displaygRbanner(i)
    {
    var bannervars = bannerimages[i].split("|");
    if (bannervars.length > 0)
       {
       document.write('<table border="0" cellpadding="0" cellspacing="0" style="margin-left:-11px;" width="100%" background="http://www.goldrushrally.com/images/gR/ads/banners/'+ bannervars[0] +'_back.jpg">');
       document.write('<tr><td align="center"><img usemap="#'+ bannervars[2] +'" border="0" src="http://www.goldrushrally.com/images/gR/ads/banners/'+ bannervars[0] +'.jpg"></td></tr></table>');
       document.write('<map name="'+ bannervars[2] +'"><area shape="rect" coords="'+ bannervars[1] +'" href="'+ bannervars[3] +'" target="_blank"></map>');
       }
    }