minHeight' in div.currentStyle){ isIE7 = true; } else{ isIE6 = true; document.execCommad('backgroundimagecache
–[if lte IE 6]> try{ document.execCommand("BackgroundImageCache", false
var isIE6 = ua.indexOf("msie 6") > -1; if (isIE6) { try { document.execCommand("BackgroundImageCache
*/ } }; try { document.execCommand("BackgroundImageCache", false, true); /* TredoSoft Multiple
原因是:IE6没有将背景图缓存，每次触发hover的时候都会重新加载 解决： 可以用JavaScript设置ie6缓存这些图片： document.execCommand("BackgroundImageCache
type="image/x-icon" href="/favicon.ico" /> try{document.execCommand("BackgroundImageCache
navigator.userAgent.toLowerCase(); var isIE6 = ua.indexOf("msie 6") > -1; if (isIE6) { try { document.execCommand("BackgroundImageCache
true: false; return s; })(navigator.userAgent.toLowerCase()); Sys.IE6 && document.execCommand("BackgroundImageCache
document.getElementsByTagName('head')[0]; if (document.execCommand) try { document.execCommand("BackgroundImageCache
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