代码：

 $('#Zl').html('<iframe width="100%" id="rid" src="<?php echo $ff["url"];?>" frameborder="0"></iframe>');
  $(document).ready(function () {
    function fix_height() { $("#rid").attr("height", (($(window).height()) - 5) + "px"); }
    $(window).resize(function () { fix_height(); }).resize()
 });