//Wenn Parameter filterShops= nicht vorhanden dann filterShops=*

// Url Vars auslesen
var strVars = window.location.search;
strVars = strVars.replace("?","");
var splitVars = new Array();
var vars = new Array();
splitVars = strVars.split("&");
for(i=0;i<splitVars.length;i++)
{ var tmp = splitVars[i].split("=");
  var nname = tmp[0];
  vars[nname] = tmp[1];
}

if(window.vars["filterShops"] == undefined)
{ window.location = window.location.search+"&filterShops=*";
}