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var cat;
function CheckCharacters(text,allowed) {
for (var i = 0; i < text.length; ++i) {
if(allowed.indexOf(text.charAt(i))<0 ) {
return false;
}
}
return true;
}
function Calc() {
var input = document.getElementById("input").value*1;
if(CheckCharacters(input,"0123456789")) cat=input;
for(var i=0;i<BIT_COUNT;++i)
Mark(i);
}
function Mark(bit) {
if((1<<bit) & cat) {
if(!(bit%2))
document.getElementById(PREFIX+bit).className="mark";
else
document.getElementById(PREFIX+bit).className="darkmark";
}
else {
if(!(bit%2))
document.getElementById(PREFIX+bit).className="";
else
document.getElementById(PREFIX+bit).className="dark";
}
}
function Switch(bit) {
cat = cat ^ (1 << bit);
Mark(bit);
document.getElementById("input").value = cat;
}
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