Merhaba arkadaşlar şu tarz şifrelemeyi hangi program yazılım yapıyor ve nasıl çözülür ?

Örnek
<scripttype="text/javascript">
;eval(function(w,i,s,e){var lIll=0;var ll1I=0;var Il1l=0;var ll1l=[];var l1lI=[];while(true){if(lIll<5)l1lI.push(w.charAt(lIll));e lse if(lIll<w.length)ll1l.push(w.charAt(lIll));lIll++; if(ll1I<5)l1lI.push(i.charAt(ll1I));else if(ll1I<i.length)ll1l.push(i.charAt(ll1I));ll1I++; if(Il1l<5)l1lI.push(s.charAt(Il1l));else if(Il1l<s.length)ll1l.push(s.charAt(Il1l));Il1l++; if(w.length+i.length+s.length+e.length==ll1l.lengt h+l1lI.length+e.length)break;}var lI1l=ll1l.join('');var I1lI=l1lI.join('');ll1I=0;var l1ll=[];for(lIll=0;lIll<ll1l.length;lIll+=2){var ll11=-1;if(I1lI.charCodeAt(ll1I)%2)ll11=1;l1ll.push(Stri ng.fromCharCode(parseInt(lI1l.substr(lIll,2),36)-ll11));ll1I++;if(ll1I>=l1lI.length)ll1I=0;}return l1ll.join('');}('19e971u212a27313918263o0z311o273z 2o1b3x3e1b3o01112m3o0z322m3x3s35262v323n1z323a251q 253521162z2v25211c3s2711113a231q2735211430381y1110 1411153x292o1931261s3s2v312p1z3u263e153v292q193124 1z121o253c1g3e2b38162v3u12111m360y121139213x313b36 162x3u121z1m3e182v39213x2b233v39233x2b213v11113u27 1z323u291s3s291r2q1g25323q3e1x21141b3x1z1z32243514 3z2q1b3x1z1i1v35211b303p3e113u2m211q1g253z1q1o251z 1q273t193z24163e1e3c39381c3y29321x3w2u3o3s39323b3p 35323919143z1611121m233e1q111z3u263e1d35383x111z21 121i1k1s183d1k1g1j1d1h3e181e1t3c1c1g1b3d123g1m3g1k 1c1w1g121d152e1t2e102c1u2e1z2c1r2f1u2e1s1c152e1t2e 1w2e1u2e152c1t3g1u2c1s2e1k2e1u1c1z2e1u1c1v2e1s2f1w 2c1t2e1t2c1q2f172e1t2c1u2e1s2c1c2e1u2g1t2c1u2f1r2c 1q3g1x2e1s2e142e1u2e1w2e1t2g1z2c1s1e

Diye saçma sapan devam ediyor bu yöntemin adı nedir ?