realtime unicode conveter.

var text;
var nVowels;
var consonants= new Array()
var consonantsUni= new Array()
var vowels= new Array()
var vowelsUni= new Array()
var vowelModifiersUni= new Array()
var specialConsonants= new Array()
var specialConsonantsUni= new Array()
var specialCharUni= new Array()
var specialChar= new Array()


    vowelsUni[0]='ඌ';    vowels[0]='oo';    vowelModifiersUni[0]='ූ';
    vowelsUni[1]='ඕ';    vowels[1]='o\\)';    vowelModifiersUni[1]='ෝ';
    vowelsUni[2]='ඕ';    vowels[2]='oe';    vowelModifiersUni[2]='ෝ';
    vowelsUni[3]='ආ';    vowels[3]='aa';    vowelModifiersUni[3]='ා';
    vowelsUni[4]='ආ';    vowels[4]='a\\)';    vowelModifiersUni[4]='ා';
    vowelsUni[5]='ඈ';    vowels[5]='Aa';    vowelModifiersUni[5]='ෑ';
    vowelsUni[6]='ඈ';    vowels[6]='A\\)';    vowelModifiersUni[6]='ෑ';
    vowelsUni[7]='ඈ';    vowels[7]='ae';    vowelModifiersUni[7]='ෑ';
    vowelsUni[8]='ඊ';    vowels[8]='ii';    vowelModifiersUni[8]='ී';
    vowelsUni[9]='ඊ';    vowels[9]='i\\)';    vowelModifiersUni[9]='ී';
    vowelsUni[10]='ඊ';    vowels[10]='ie';    vowelModifiersUni[10]='ී';
    vowelsUni[11]='ඊ';    vowels[11]='ee';    vowelModifiersUni[11]='ී';
    vowelsUni[12]='ඒ';    vowels[12]='ea';    vowelModifiersUni[12]='ේ';
    vowelsUni[13]='ඒ';    vowels[13]='e\\)';    vowelModifiersUni[13]='ේ';
    vowelsUni[14]='ඒ';    vowels[14]='ei';    vowelModifiersUni[14]='ේ';
    vowelsUni[15]='ඌ';    vowels[15]='uu';    vowelModifiersUni[15]='ූ';
    vowelsUni[16]='ඌ';    vowels[16]='u\\)';    vowelModifiersUni[16]='ූ';
    vowelsUni[17]='ඖ';    vowels[17]='au';    vowelModifiersUni[17]='ෞ';
    vowelsUni[18]='ඇ';    vowels[18]='/\a';    vowelModifiersUni[18]='ැ';

    vowelsUni[19]='අ';    vowels[19]='a';    vowelModifiersUni[19]='';
    vowelsUni[20]='ඇ';    vowels[20]='A';    vowelModifiersUni[20]='ැ';
    vowelsUni[21]='ඉ';    vowels[21]='i';    vowelModifiersUni[21]='ි';
    vowelsUni[22]='එ';    vowels[22]='e';    vowelModifiersUni[22]='ෙ';
    vowelsUni[23]='උ';    vowels[23]='u';    vowelModifiersUni[23]='ු';
    vowelsUni[24]='ඔ';    vowels[24]='o';    vowelModifiersUni[24]='ො';
    vowelsUni[25]='ඓ';    vowels[25]='I';    vowelModifiersUni[25]='ෛ';
    nVowels=26;

    specialConsonantsUni[0]='ං'; specialConsonants[0]=/\\n/g;
    specialConsonantsUni[1]='ඃ'; specialConsonants[1]=/\\h/g;
    specialConsonantsUni[2]='ඞ'; specialConsonants[2]=/\\N/g;
    specialConsonantsUni[3]='ඍ'; specialConsonants[3]=/\\R/g;
    //special characher Repaya
    specialConsonantsUni[4]='ර්'+'\u200D'; specialConsonants[4]=/R/g;
    specialConsonantsUni[5]='ර්'+'\u200D'; specialConsonants[5]=/\\r/g;

    consonantsUni[0]='ඬ'; consonants[0]='nnd';
    consonantsUni[1]='ඳ'; consonants[1]='nndh';
    consonantsUni[2]='ඟ'; consonants[2]='nng';
    consonantsUni[3]='ථ'; consonants[3]='Th';
    consonantsUni[4]='ධ'; consonants[4]='Dh';
    consonantsUni[5]='ඝ'; consonants[5]='gh';
    consonantsUni[6]='ඡ'; consonants[6]='Ch';
    consonantsUni[7]='ඵ'; consonants[7]='ph';
    consonantsUni[8]='භ'; consonants[8]='bh';
    consonantsUni[9]='ශ'; consonants[9]='sh';
    consonantsUni[10]='ෂ'; consonants[10]='Sh';
    consonantsUni[11]='ඥ'; consonants[11]='GN';
    consonantsUni[12]='ඤ'; consonants[12]='KN';
    consonantsUni[13]='ළු'; consonants[13]='Lu';
    consonantsUni[14]='ද'; consonants[14]='dh';
    consonantsUni[15]='ච'; consonants[15]='ch';
    consonantsUni[16]='ඛ'; consonants[16]='kh';
    consonantsUni[17]='ත'; consonants[17]='th';

    consonantsUni[18]='ට'; consonants[18]='t';
    consonantsUni[19]='ක'; consonants[19]='k';
    consonantsUni[20]='ඩ'; consonants[20]='d';
    consonantsUni[21]='න'; consonants[21]='n';
    consonantsUni[22]='ප'; consonants[22]='p';
    consonantsUni[23]='බ'; consonants[23]='b';
    consonantsUni[24]='ම'; consonants[24]='m';
    consonantsUni[25]='‍ය'; consonants[25]='\\u005C' + 'y';
    consonantsUni[26]='‍ය'; consonants[26]='Y';
    consonantsUni[27]='ය'; consonants[27]='y';
    consonantsUni[28]='ජ'; consonants[28]='j';
    consonantsUni[29]='ල'; consonants[29]='l';
    consonantsUni[30]='ව'; consonants[30]='v';
    consonantsUni[31]='ව'; consonants[31]='w';
    consonantsUni[32]='ස'; consonants[32]='s';
    consonantsUni[33]='හ'; consonants[33]='h';
    consonantsUni[34]='ණ'; consonants[34]='N';
    consonantsUni[35]='ළ'; consonants[35]='L';
    consonantsUni[36]='ඛ'; consonants[36]='K';
    consonantsUni[37]='ඝ'; consonants[37]='G';
    consonantsUni[38]='ඨ'; consonants[38]='T';
    consonantsUni[39]='ඪ'; consonants[39]='D';
    consonantsUni[40]='ඵ'; consonants[40]='P';
    consonantsUni[41]='ඹ'; consonants[41]='B';
    consonantsUni[42]='ෆ'; consonants[42]='f';
    consonantsUni[43]='ඣ'; consonants[43]='q';
    consonantsUni[44]='ග'; consonants[44]='g';
    //last because we need to ommit this in dealing with Rakaransha
    consonantsUni[45]='ර'; consonants[45]='r';

    specialCharUni[0]='ෲ'; specialChar[0]='ruu';
    specialCharUni[1]='ෘ'; specialChar[1]='ru';
    //specialCharUni[2]='්‍ර'; specialChar[2]='ra';


function startText() {
    var s,r,v;
    text = document.txtBox.box1.value;
    //special consonents
    for (var i=0; i<specialConsonants.length; i++){
        text = text.replace(specialConsonants[i], specialConsonantsUni[i]);
    }
    //consonents + special Chars
    for (var i=0; i<specialCharUni.length; i++){
        for (var j=0;j<consonants.length;j++){
            s = consonants[j] + specialChar[i];
            v = consonantsUni[j] + specialCharUni[i];
            r = new RegExp(s, "g");
            text = text.replace(r, v);
        }
    }
    //consonants + Rakaransha + vowel modifiers
    for (var j=0;j<consonants.length;j++){
        for (var i=0;i<vowels.length;i++){
            s = consonants[j] + "r" + vowels[i];
            v = consonantsUni[j] + "්‍ර" + vowelModifiersUni[i];
            r = new RegExp(s, "g");
            text = text.replace(r, v);
        }
        s = consonants[j] + "r";
        v = consonantsUni[j] + "්‍ර";
        r = new RegExp(s, "g");
        text = text.replace(r, v);
    }
    //consonents + vowel modifiers
    for (var i=0;i<consonants.length;i++){
        for (var j=0;j<nVowels;j++){
            s = consonants[i]+vowels[j];
            v = consonantsUni[i] + vowelModifiersUni[j];
            r = new RegExp(s, "g");
            text = text.replace(r, v);
        }
    }

    //consonents + HAL
    for (var i=0; i<consonants.length; i++){
        r = new RegExp(consonants[i], "g");
        text = text.replace(r, consonantsUni[i]+"්");
    }

    //vowels
    for (var i=0; i<vowels.length; i++){
        r = new RegExp(vowels[i], "g");
        text = text.replace(r, vowelsUni[i]);
    }

    document.txtBox.box2.value=text;
}

function copyit(theField) {
    var tempval=eval("document."+theField);
    tempval.focus();
    tempval.select();
    therange=tempval.createTextRange();
    therange.execCommand("Copy")
}

var schemeVisible = 0;
function changeVisibility(){
    if (schemeVisible){
        document.getElementById('scheme').style.visibility='hidden';
        document.getElementById('link').innerHTML="&nbsp;Show Transliteration Scheme&nbsp;";
        schemeVisible=0;
    }
    else{
        document.getElementById('scheme').style.visibility='visible';
        document.getElementById('link').innerHTML="&nbsp;&nbsp;Hide Transliteration Scheme&nbsp;";
        schemeVisible=1;
    }
}
//  End -->

    </script>