jquery ui 换肤 问题

我的页面加载了jquery ui，改写了官方themeroller的css路径和图片路径，用兼容模式能正常显示，但是用ie8的普通模式打开没有换肤效果，但是用官方的css路径在ie8的普通模式下能正常显示，求高手解答代码如下改写部分 var switcherpane = $('<div class="jquery-ui-themeswitcher"><div id="themeGallery"> <ul> <li><a href="../../Content/themes/ui-lightness/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_ui_light.png" alt="UI Lightness" title="UI Lightness"/><span class="themeName">UI lightness</span></a></li><li><a href="../../Content/themes/ui-darkness/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_ui_dark.png" alt="UI Darkness" title="UI Darkness" /><span class="themeName">UI darkness</span></a></li><li><a href="../../Content/themes/smoothness/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_smoothness.png" alt="Smoothness" title="Smoothness" /><span class="themeName">Smoothness</span></a></li><li><a href="../../Content/themes/start/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_start_menu.png" alt="Start" title="Start" /><span class="themeName">Start</span></a></li><li><a href="../../Content/themes/redmond/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_windoze.png" alt="Redmond" title="Redmond" /><span class="themeName">Redmond</span></a></li><li><a href="../../Content/themes/sunny/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_sunny.png" alt="Sunny" title="Sunny" /><span class="themeName">Sunny</span></a></li><li><a href="../../Content/themes/overcast/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_overcast.png" alt="Overcast" title="Overcast" /><span class="themeName">Overcast</span></a></li><li><a href="../../Content/themes/le-frog/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_le_frog.png" alt="Le Frog" title="Le Frog" /><span class="themeName">Le Frog</span></a></li><li><a href="../../Content/themes/flick/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_flick.png" alt="Flick" title="Flick" /><span class="themeName">Flick</span></a></li><li><a href="../../Content/themes/pepper-grinder/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_pepper_grinder.png" alt="Pepper Grinder" title="Pepper Grinder" /><span class="themeName">Pepper Grinder</span></a></li><li><a href="../../Content/themes/eggplant/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_eggplant.png" alt="Eggplant" title="Eggplant" /><span class="themeName">Eggplant</span></a></li><li><a href="../../Content/themes/dark-hive/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_dark_hive.png" alt="Dark Hive" title="Dark Hive" /><span class="themeName">Dark Hive</span></a></li><li><a href="../../Content/themes/cupertino/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_cupertino.png" alt="Cupertino" title="Cupertino" /><span class="themeName">Cupertino</span></a></li><li><a href="../../Content/themes/south-street/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_south_street.png" alt="South St" title="South St" /><span class="themeName">South Street</span></a></li><li><a href="../../Content/themes/blitzer/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_blitzer.png" alt="Blitzer" title="Blitzer" /><span class="themeName">Blitzer</span></a></li><li><a href="../../Content/themes/humanity/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_humanity.png" alt="Humanity" title="Humanity" /><span class="themeName">Humanity</span></a></li><li><a href="../../Content/themes/hot-sneaks/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_hot_sneaks.png" alt="Hot Sneaks" title="Hot Sneaks" /><span class="themeName">Hot sneaks</span></a></li><li><a href="../../Content/themes/excite-bike/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_excite_bike.png" alt="Excite Bike" title="Excite Bike" /><span class="themeName">Excite Bike</span></a></li><li><a href="../../Content/themes/vader/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_black_matte.png" alt="Vader" title="Vader" /><span class="themeName">Vader</span></a></li><li><a href="../../Content/themes/dot-luv/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_dot_luv.png" alt="Dot Luv" title="Dot Luv" /><span class="themeName">Dot Luv</span></a></li><li><a href="../../Content/themes/mint-choc/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_mint_choco.png" alt="Mint Choc" title="Mint Choc" /><span class="themeName">Mint Choc</span></a></li><li><a href="../../Content/themes/black-tie/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_black_tie.png" alt="Black Tie" title="Black Tie" /><span class="themeName">Black Tie</span></a></li><li><a href="../../Content/themes/trontastic/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_trontastic.png" alt="Trontastic" title="Trontastic" /><span class="themeName">Trontastic</span></a></li><li><a href="../../Content/themes/swanky-purse/jquery.ui.theme.css"><img src="../../Content/images/themes_preview/theme_90_swanky_purse.png" alt="Swanky Purse" title="Swanky Purse" /><span class="themeName">Swanky Purse</span></a></li> </ul></div></div>').find('div').removeAttr('id');官方themeroller地址:http://jqueryui.com/themeroller/themeswitchertool/