function addDOMLoadEvent(func) {
   if (!window.__load_events) {
      var init = function () {
          // quit if this function has already been called
          if (arguments.callee.done) return;

          // flag this function so we don't do the same thing twice
          arguments.callee.done = true;

          // kill the timer
          if (window.__load_timer) {
              clearInterval(window.__load_timer);
              window.__load_timer = null;
          }

          // execute each function in the stack in the order they were added
          for (var i=0;i < window.__load_events.length;i++) {
              window.__load_events[i]();
          }
          window.__load_events = null;
      };

      // for Mozilla/Opera9
      if (document.addEventListener) {
          document.addEventListener("DOMContentLoaded", init, false);
      }

      // for Internet Explorer
      /*@cc_on @*/
      /*@if (@_win32)
          document.write("<scr"+"ipt id=__ie_onload defer src=//0><\/scr"+"ipt>");
          var script = document.getElementById("__ie_onload");
          script.onreadystatechange = function() {
              if (this.readyState == "complete") {
                  init(); // call the onload handler
              }
          };
      /*@end @*/

      // for Safari
      if (/WebKit/i.test(navigator.userAgent)) { // sniff
          window.__load_timer = setInterval(function() {
              if (/loaded|complete/.test(document.readyState)) {
                  init(); // call the onload handler
              }
          }, 10);
      }

      // for other browsers
      window.onload = init;

      // create event function stack
      window.__load_events = [];
   }

   // add function to event stack
   window.__load_events.push(func);
}


function ProductSearch()
{
    window.location = "http://www.royalcanin.us/products/Retailer.aspx?Zip=" + document.getElementById('RetailSearch').value;
}

function GoldProductSearch()
{
    document.all.GoldResultsFrame.src = "http://www.royalcanin.us/products/Retailer.aspx?Zip=" + document.getElementById('zipcode').value;
}

function goBack()
{
    history.go(-1);
}

function onRetailClick()
{
    var url = "http://www.royalcanin.us/products/RetailResults.aspx?Zip=" + document.getElementById('zipcode').value;
    Lightview.show({ href: url, rel: 'iframe', options: { width: 600, height: 500} });
}

function onRetailFlashClick(zip)
{
    var url = "http://www.royalcanin.us/products/RetailResults.aspx?Zip=" + zip;
    Lightview.show({ href: url, rel: 'iframe', options: { width: 600, height: 500} });
}