Chrome not loading map markers due to tab -

i have google map page, works fine in every browser chrome. when chrome loads it, thinks add tab trying add browser tab instead of tab in infobox. ideas? in advance. here code snippet in question.

// open info bubbles              google.maps.event.addlistener(marker, 'click', function () {                  infobubble.open(map, marker);                  infobubble.removetab(4);                  infobubble.removetab(3);                  infobubble.removetab(2);                  infobubble.removetab(1);                  infobubble.removetab(0);                  if (category == "kml") {                      window.open("" + url);                  }                  //if (!category == "kml") {                  infobubble.addtab('details', contentstring_detail);                  //}                  if (!notes_tab == "") {                      infobubble.addtab('notes', contentstring_notes);                  }                  if (!map_tab == "") {                      switch (category) {                          case "camping": infobubble.addtab('campsite map', contentstring_maps);                              break;                          case "hike": infobubble.addtab('trail map', contentstring_maps);                              break;                      }                  }                  if (!hiking_detail_tab == "") {                      infobubble.addtab('trail notes', contentstring_hiking_detail);                  }                  if (!camping_detail_tab == "") {                      infobubble.addtab('campsite notes', contentstring_camping_detail);                  }              });          }