$(document).ready(function() {
    // put all your jQuery goodness in here.
	$("body").append("<div id='tracker'></div>"); 
	
	var ref = gup("pid");
	var hop = gup("hop");
 
	
	var htmlfortrack ='<iframe frameborder="0" scrolling="no" src="tracker.php?pid=' + ref + '&hop='+ hop + '" width="1" height="1" ></iframe>';
	$("#tracker").html(htmlfortrack);

});

function gup( name ) // to retrieve get value in the url
{
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return results[1];
}

function getUrlVars()
{
    var vars = [], hash;
    var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
    for(var i = 0; i < hashes.length; i++)
    {
        hash = hashes[i].split('=');
        vars.push(hash[0]);
        vars[hash[0]] = hash[1];
    }
    return vars;
}