Ori-chan lo has copiado mal:
function Check(passwords){
if (passwords == logeader){
var crt000734 = "ı234";
var crt734000 = crt000734.replace("ı", "1");
if (document.getElementById('log').value == crt000734){
document.location.href=crt734000 +".php";
}else{
document.getElementById('try').style.display="block";
}
}
}
La comparación es con
crt000734, no
crt734000.