function getURLParam(strParamName){
  var strReturn = "";
  var strHref = window.location.href;
  if ( strHref.indexOf("?") > -1 ){
    var strQueryString = strHref.substr(strHref.indexOf("?")).toLowerCase();
    var aQueryString = strQueryString.split("&");
    for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
      if (
aQueryString[iParam].indexOf(strParamName.toLowerCase() + "=") > -1 ){
        var aParam = aQueryString[iParam].split("=");
        strReturn = aParam[1];
        break;
      }
    }
  }
  return unescape(strReturn);
}


// if the href does not have and r

var pram = getURLParam('r');


if(pram == '')
{
  random_num = (Math.round((Math.random()*999)+1))
  
  url = window.location.href;
  
   newurl = url+'?r='+random_num;
   window.location = newurl;
	
}





function newurl(url)
{
random_num = (Math.round((Math.random()*999)+1))
newurl = url+'?r='+random_num;
document.location.href = newurl;
}