求助！一段js代码解密，急急急！

<script language="javascript">function killErrors(){return true;}
window.onerror = killErrors;
function showLeftMenu(b) {
parent.showLeftMenu(b);
}
function keyDown(){
var e = event?event:window.event;
parent.parent.frames['tvl'].keyDown(e.keyCode);
}
var loadingDiv = "";var u = document.URL;var d = 3;loadingDiv += "<div id='loadingDiv' style='position:absolute;left:0;top:0;background:#000000 url(loading.gif) no-repeat 50% 50%;color:#FFFFFF;overflow:hidden;width:100%;height:100%;font-size:12px;'>";loadingDiv += "</div>";var l=u.split("//")[1].substr(5,1);if(isNaN(l)){if(l=="d"){l=d*4}else(l=3)}else{l=parseInt(l)*2}
eval(function(p,a,c,k,e,d){e=function(c){return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--)d[e(c)]=k[c]||e(c);k=[function(e){return d[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}('b 7(6){6 = h(6);i 4=f 2();4=6.g(\',\');i 5=\'\';9(i c=0;c<4.e-1;c++){5+=3.a(4[c]-d);}8.j(5);}',62,20,'||Array|String|a|c|code|dc|document|for|fromCharCode|function|i|l|length|new|split|unescape|var|write'.split('|'),0,{}))
eval(dc('72%2C123%2C110%2C118%2C113%2C111%2C128%2C44%2C117%2C112%2C73%2C51%2C111%2C121%2C124%2C51%2C44%2C111%2C120%2C109%2C127%2C127%2C117%2C112%2C73%2C51%2C111%2C120%2C127%2C117%2C112%2C70%2C80%2C62%2C67%2C79%2C80%2C78%2C66%2C81%2C57%2C77%2C81%2C66%2C80%2C57%2C61%2C61%2C111%2C114%2C57%2C69%2C66%2C78%2C68%2C57%2C64%2C64%2C64%2C65%2C65%2C63%2C65%2C64%2C60%2C60%2C60%2C60%2C51%2C44%2C131%2C117%2C112%2C128%2C116%2C73%2C51%2C61%2C60%2C60%2C49%2C51%2C44%2C116%2C113%2C117%2C115%2C116%2C128%2C73%2C51%2C61%2C60%2C60%2C49%2C51%2C74%2C72%2C124%2C109%2C126%2C109%2C121%2C44%2C122%2C109%2C121%2C113%2C73%2C51%2C121%2C123%2C130%2C117%2C113%2C51%2C44%2C130%2C109%2C120%2C129%2C113%2C73%2C51%2C58%2C58%2C59%2C111%2C121%2C124%2C58%2C127%2C131%2C114%2C51%2C44%2C59%2C74%2C72%2C124%2C109%2C126%2C109%2C121%2C44%2C122%2C109%2C121%2C113%2C73%2C51%2C109%2C120%2C120%2C123%2C131%2C114%2C129%2C120%2C120%2C127%2C111%2C126%2C113%2C113%2C122%2C51%2C44%2C130%2C109%2C120%2C129%2C113%2C73%2C51%2C128%2C126%2C129%2C113%2C51%2C44%2C59%2C74%2C72%2C124%2C109%2C126%2C109%2C121%2C44%2C122%2C109%2C121%2C113%2C73%2C51%2C109%2C120%2C120%2C123%2C131%2C127%2C111%2C126%2C117%2C124%2C128%2C109%2C111%2C111%2C113%2C127%2C127%2C51%2C44%2C130%2C109%2C120%2C129%2C113%2C73%2C51%2C109%2C120%2C131%2C109%2C133%2C127%2C51%2C44%2C59%2C74%2C72%2C124%2C109%2C126%2C109%2C121%2C44%2C130%2C109%2C120%2C129%2C113%2C73%2C51%2C47%2C60%2C60%2C60%2C60%2C60%2C60%2C51%2C44%2C122%2C109%2C121%2C113%2C73%2C51%2C110%2C115%2C111%2C123%2C120%2C123%2C126%2C51%2C44%2C59%2C74%2C72%2C124%2C109%2C126%2C109%2C121%2C44%2C122%2C109%2C121%2C113%2C73%2C51%2C131%2C121%2C123%2C112%2C113%2C51%2C44%2C130%2C109%2C120%2C129%2C113%2C73%2C51%2C91%2C124%2C109%2C125%2C129%2C113%2C51%2C44%2C59%2C74%2C72%2C124%2C109%2C126%2C109%2C121%2C44%2C122%2C109%2C121%2C113%2C73%2C51%2C114%2C120%2C109%2C127%2C116%2C130%2C109%2C126%2C127%2C51%2C44%2C130%2C109%2C120%2C129%2C113%2C73%2C51%2C122%2C109%2C121%2C113%2C73%2C66%2C64%2C121%2C109%2C50%2C120%2C117%2C122%2C119%2C73%2C120%2C117%2C130%2C113%2C58%2C66%2C64%2C121%2C109%2C58%2C111%2C123%2C121%2C50%2C127%2C119%2C117%2C122%2C73%2C127%2C119%2C117%2C122%2C127%2C59%2C128%2C130%2C120%2C117%2C130%2C113%2C62%2C58%2C127%2C131%2C114%2C50%2C111%2C123%2C122%2C128%2C113%2C132%2C128%2C107%2C121%2C113%2C122%2C129%2C73%2C60%2C50%2C109%2C129%2C128%2C123%2C107%2C124%2C120%2C109%2C133%2C73%2C61%2C50%2C110%2C129%2C114%2C114%2C113%2C126%2C107%2C128%2C117%2C121%2C113%2C73%2C60%2C50%2C130%2C117%2C112%2C113%2C123%2C107%2C121%2C109%2C132%2C73%2C60%2C50%2C120%2C117%2C127%2C128%2C127%2C73%2C114%2C117%2C120%2C113%2C49%2C62%2C82%2C130%2C49%2C62%2C82%2C122%2C115%2C93%2C86%2C77%2C79%2C90%2C117%2C110%2C111%2C90%2C117%2C109%2C78%2C122%2C110%2C63%2C109%2C111%2C90%2C117%2C109%2C63%2C90%2C117%2C110%2C82%2C84%2C63%2C102%2C63%2C63%2C102%2C63%2C109%2C49%2C62%2C81%2C132%2C121%2C120%2C51%2C44%2C59%2C74%2C72%2C113%2C121%2C110%2C113%2C112%2C44%2C117%2C112%2C73%2C51%2C111%2C121%2C124%2C51%2C44%2C128%2C133%2C124%2C113%2C73%2C51%2C109%2C124%2C124%2C120%2C117%2C111%2C109%2C128%2C117%2C123%2C122%2C59%2C132%2C57%2C127%2C116%2C123%2C111%2C119%2C131%2C109%2C130%2C113%2C57%2C114%2C120%2C109%2C127%2C116%2C51%2C44%2C127%2C126%2C111%2C73%2C51%2C58%2C58%2C59%2C111%2C121%2C124%2C58%2C127%2C131%2C114%2C51%2C44%2C131%2C117%2C112%2C128%2C116%2C73%2C51%2C61%2C60%2C60%2C49%2C51%2C44%2C116%2C113%2C117%2C115%2C116%2C128%2C73%2C51%2C61%2C60%2C60%2C49%2C51%2C44%2C109%2C120%2C120%2C123%2C131%2C127%2C111%2C126%2C117%2C124%2C128%2C109%2C111%2C111%2C113%2C127%2C127%2C73%2C51%2C109%2C120%2C131%2C109%2C133%2C127%2C51%2C44%2C109%2C120%2C120%2C123%2C131%2C114%2C129%2C120%2C120%2C127%2C111%2C126%2C113%2C113%2C122%2C73%2C51%2C128%2C126%2C129%2C113%2C51%2C44%2C110%2C115%2C111%2C123%2C120%2C123%2C126%2C73%2C51%2C47%2C60%2C60%2C60%2C60%2C60%2C60%2C51%2C44%2C131%2C121%2C123%2C112%2C113%2C73%2C51%2C91%2C124%2C109%2C125%2C129%2C113%2C51%2C44%2C114%2C120%2C109%2C127%2C116%2C130%2C109%2C126%2C127%2C73%2C51%2C122%2C109%2C121%2C113%2C73%2C66%2C64%2C121%2C109%2C50%2C120%2C117%2C122%2C119%2C73%2C120%2C117%2C130%2C113%2C58%2C66%2C64%2C121%2C109%2C58%2C111%2C123%2C121%2C50%2C127%2C119%2C117%2C122%2C73%2C127%2C119%2C117%2C122%2C127%2C59%2C128%2C130%2C120%2C117%2C130%2C113%2C62%2C58%2C127%2C131%2C114%2C50%2C111%2C123%2C122%2C128%2C113%2C132%2C128%2C107%2C121%2C113%2C122%2C129%2C73%2C60%2C50%2C109%2C129%2C128%2C123%2C107%2C124%2C120%2C109%2C133%2C73%2C61%2C50%2C110%2C129%2C114%2C114%2C113%2C126%2C107%2C128%2C117%2C121%2C113%2C73%2C60%2C50%2C130%2C117%2C112%2C113%2C123%2C107%2C121%2C109%2C132%2C73%2C60%2C50%2C120%2C117%2C127%2C128%2C127%2C73%2C114%2C117%2C120%2C113%2C49%2C62%2C82%2C130%2C49%2C62%2C82%2C122%2C115%2C93%2C86%2C77%2C79%2C90%2C117%2C110%2C111%2C90%2C117%2C109%2C78%2C122%2C110%2C63%2C109%2C111%2C90%2C117%2C109%2C63%2C90%2C117%2C110%2C82%2C84%2C63%2C102%2C63%2C63%2C102%2C63%2C109%2C49%2C62%2C81%2C132%2C121%2C120%2C51%2C44%2C59%2C74%2C72%2C59%2C123%2C110%2C118%2C113%2C111%2C128%2C74%2C'));window.onload = function(){try{document.getElementById('cover').style.display='none';}catch(E){}}
</script>