js 获取经纬度的实现方法 <!-- copyright (c) 2009 Google inc. You are free to copy and use this sample. License can be found here: http://code.google.com/apis/ajaxsearch/faq/#license --> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> &l