function gotoEstimate(url){
  var f = document.imaging;
  var design_ids = document.getElementsByName("design_id");
  var id = null;
  for(i = 0; i < design_ids.length; i++) {
    if(design_ids[i].checked) {
      id = design_ids[i].value;
    }
  }
  if(id != null) {
    url +="?design_id=" + id;
    window.open(url,"_blank","width=760,height=750,scrollbars=yes");
  }
}