// JavaScript Document

function urlLookup(name)
{
  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];
  }   
}
var urlParamID = urlLookup('id');

//put your parameter name in the last line above.
//eg url would be http://www.url.com/index.html?id=home