var urlBase = "http://search2.autotv.co.nz/legacy/search.aspx?id=75";

// Check if a make has been specified. add paramater for vehicles in transit
var paramMake = getQuerystring("make", null);
if(paramMake !="") {
   document.getElementById("frmSearch").src = urlBase + "&make=" + paramMake;
}

function getQuerystring(key, default_)
{
   if (default_==null) default_="";
   key = key.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
   var regex = new RegExp("[\\?&]"+key+"=([^&#]*)");
   var qs = regex.exec(window.location.href);
   if(qs == null)
   return default_;
   else
   return qs[1];
}