Problema con flex slider en IE

[waltersele]

Y este el CSS:
/* Slider
http://www.freshdesignweb.com/fashion-responsive-slider-tutorial.html
*/
/* Slider
/*-----------------------------------------------------------------------------------*/
.slider_container{ width:920px; margin:auto; clear:both; background:url(images/shadow_top.png) no-repeat top center; padding:0;box-shadow:0 0 130px gray}
.flex-caption{ position: absolute; right:11px; bottom:20px;}
.caption_title_line{ width:450px; height:75px; padding:5px 15px 10px 15px;background:rgba(223,74,0,0.50);color: #303030;}
.flex-caption h2{ color:#303030;font-size:20px; padding:5px 0 5px 0; margin:0px;font-family: "Open Sans", Arial, sans-serif;text-transform: uppercase; }

.flex-container a:active,
.flexslider a:active {outline: none;}
.slides,
.flex-control-nav,
.flex-direction-nav {margin: 0; padding: 0; list-style: none;}

/* FlexSlider Necessary Styles
*********************************/
.flexslider {width: 100%; margin: 0; padding: 0 0 0px 0;background:url(images/shadow_bottom.png) no-repeat center bottom;}
.flexslider .slides > li {display: none;} /* Hide the slides before the JS is loaded. Avoids image jumping */
.flexslider .slides img {max-width: 100%; display: block; border:0px #ededed solid;}
.flex-pauseplay span {text-transform: capitalize;}
.slides:after {content: "."; display: block; clear: both; visibility: hidden; line-height: 0; height: 0;}
html[xmlns] .slides {display: block;}
* html .slides {height: 1%;}
.no-js .slides > li:first-child {display: block;}
.flexslider {position: relative; zoom: 1;}
.flexslider .slides {zoom: 1;}
.flexslider .slides > li {position: relative;}
.flex-container {zoom: 1; position: relative;}

/* Direction Nav */
.flex-direction-nav li a {width:45px; height:42px; margin:0; display: block; position: absolute; right:11px; cursor: pointer; text-indent: -9999px;}
.flex-direction-nav li a.next {background:url(images/anterior.png) no-repeat center; left:0;bottom:40%;}
.flex-direction-nav li a.prev {background:url(images/siguiente.png) no-repeat center;bottom:40%;right: 0}
.flex-direction-nav li a.next:hover {background:url(images/anterior.png) no-repeat center;}
.flex-direction-nav li a.prev:hover {background:url(images/siguiente.png) no-repeat center;}
.flex-direction-nav li a.disabled {opacity: .3; filter:alpha(opacity=30); cursor: default;}

/* Control Nav */
.flex-control-nav {width: 100%; position: absolute; bottom: -30px; text-align: center;}
.flex-control-nav li {margin: 0 0 0 5px; display: inline-block; zoom: 1; *display: inline;}
.flex-control-nav li:first-child {margin: 0;}
.flex-control-nav li a {width: 13px; height: 13px; display: block; cursor: pointer; text-indent: -9999px;}
.flex-control-nav li a:hover {background-position: 0 -13px;}
.flex-control-nav li a.active {background-position: 0 -26px; cursor: default;}

/* Media Queries
/*-----------------------------------------------------------------------------------*/

@media screen and (max-width: 1000px) {
.slider_container{ width:90%; margin:0 auto ; clear:both; background:none; padding:0px 0 0 0;}
.flexslider {width: 100%; margin: 0; padding:0 0 0px 0;background:none;}
.flex-direction-nav li a {width:45px; height:42px; margin:0; display: block; position: absolute; right:-10px; cursor: pointer; text-indent: -9999px;}
.flex-direction-nav li a.next {background:url(images/anterior.png) no-repeat center; bottom:0px;right: 0;}
.flex-direction-nav li a.prev {background:url(images/siguiente.png) no-repeat center;bottom:0px;right: 0;}
.flex-caption { display:none;}
}