有一段加密过的 js 能解密吗？

[twm]

eval((function(x){var d="";var p=0;while(p<x.length){if(x.charAt(p)!="`")d+=x.charAt(p++);else{var l=x.charCodeAt(p+3)-28;if(l>4)d+=d.substr(d.length-x.charCodeAt(p+1)*96-x.charCodeAt(p+2)+3104-l,l);else d+="`";p+=4}}return d})("function amb_get(a) {try {if (!window.localStorage[a]) {return null;}var b = JSON.parse(` B3;` Q#b.time < (new Date).getTime() ? ` I3 =`!-!) : b.value;} catch (c`!F,}`\"/)set(a, b, c`\":$var e = {name:a, ` m!:b, time:`!F1+ 1000 * c};`!K5`\"c!stringify(e)`!\\&f`!U-var`!\\!util = {isPrime:`!u%(n)`$(\"isNaN(n) || !isFinite` )#n % 1` #\"< 2` {&false;}if (n % 2 === 0`!:'` ,!2` 8&3` ,23`% \"m = Math.sqrt(n);for (var i = 5; i <= m; i += 6`!r#n % i` h,`!K+(i + 2)` /3}` (#true;}, findNext`\"w0`!F)n;` N\"`!K\"1`!J#`#h$.`#f#(i)`!)&i;}}}, loadImg` r'url)`%p\"image = new Image;` -!.src = url;while (` 1\"hasOwnProperty(\"complete\") && !` ?\"` -$) {`\"F$` 4!;}};"));amb_set('cup_cp_wxt',1,660000000);