您只需要爲div添加實際背景。 IE在識別點擊具有透明背景的元素和CSS所帶來的問題方面存在着臭名昭着的問題,它使背景在技術上對每個IE版本都是透明的(過濾器不算作背景)。
#transCover {
background:#666; /* add this line */
background: -moz-linear-gradient(top, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0.4) 1%, rgba(0,0,0,0.4) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,0.4)), color-stop(1%,rgba(0,0,0,0.4)), color-stop(100%,rgba(0,0,0,0.4))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, rgba(0,0,0,0.4) 0%,rgba(0,0,0,0.4) 1%,rgba(0,0,0,0.4) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, rgba(0,0,0,0.4) 0%,rgba(0,0,0,0.4) 1%,rgba(0,0,0,0.4) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, rgba(0,0,0,0.4) 0%,rgba(0,0,0,0.4) 1%,rgba(0,0,0,0.4) 100%); /* IE10+ */
background: linear-gradient(to bottom, rgba(0,0,0,0.4) 0%,rgba(0,0,0,0.4) 1%,rgba(0,0,0,0.4) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#66000000', endColorstr='#66000000',GradientType=0); /* IE6-9 */
}