jQuery.browser() removed

jQuery.browser() removed

 (jQuery Core 1.9 Upgrade Guide)

http://jquery.com/upgrade-guide/1.9/#jquery-browser-removed

[CSS] Cross Browser Opacity

CSS → Cross Browser Opacity

例：透明度0： ↓↓↓

.opacityClass {

  /* IE 8 */

  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";

  /* IE 5-7 */

  filter: alpha(opacity=0);

  /* Netscape */

  -moz-opacity: 0.0;

  /* Safari 1.x */

  -khtml-opacity: 0.0;

  /* Good browsers */

  opacity: 0.0;

}

引用來源：http://css-tricks.com/snippets/css/cross-browser-opacity/