document.onkeyup = fnkeyup;
	
	    var iTest = 0;

	var bUnicode = true;
		
    var LC_a = 0;
    var LC_e = 1;
    var LC_i = 2;
    var LC_o = 3;
    var LC_u = 4;
    var LC_y = 5;
    var UC_A = 6;
    var UC_E = 7;
    var UC_I = 8;
    var UC_O = 9;
    var UC_U = 10;
    var UC_Y = 11;

    var gsDD_d = "đ";
    var gsDD_Dcap = "Đ";
    
    var rxVn_d = new RegExp("d[dD]", "g");
    var rxVn_Dcap = new RegExp("D[dD]", "g");
    var rxVnEsc = new RegExp("\\[dD\\^\+\\(\'\`\?\~\.]", "g");

    //PATTERN_CARET ==> ^
    var rxPatternCARET = new RegExp("[aeoAEO][\\^][\'\`\?\~\.]?", "g");

    //PATTERN_PARENTHESIS ==> (
    var rxPatternPARENTHESIS = new RegExp("[aA][\(][\'\`\?\~\.]?", "g");

    //PATTERN_PLUS ==> +
    var rxPatternPLUS = new RegExp("[ouOU][\+][\'\`\?\~\.]?", "g");

    //PATTERN_VOWEL ==> aeiouy
    var rxPatternVOWEL = new RegExp("[aeiouyAEIOUY][\'\`\?\~\.]", "g");
 
    //PATTERN_Dau ==> 
    var rxPatternDau = new RegExp("&#[0-9]*;[\'\`\?\~\.]", "g");

    var garDAU =  [
    /* LC_a */		"â", ["ấ", "ầ", "ẩ", "ẫ", "ậ"],
    /* LC_e */		"ê", ["ế", "ề", "ể", "ễ", "ệ"],
    /* LC_o */		"ô", ["ố", "ồ", "ổ", "ỗ", "ộ"],
    /* UC_A */		"Â", ["Ấ", "Ầ", "Ẩ", "Ẫ", "Ậ"],
    /* UC_E */		"Ê", ["Ế", "Ề", "Ể", "Ễ", "Ệ"],
    /* UC_O */		"Ô", ["Ố", "Ồ", "Ổ", "Ỗ", "Ộ"],
    /* LC_a */		"ă", ["ắ", "ằ", "ẳ", "ẵ", "ặ"],
    /* UC_A */		"Ă", ["Ắ", "Ằ", "Ẳ", "Ẵ", "Ặ"],
    /* LC_o */		"ơ", ["ớ", "ờ", "ở", "ỡ", "ợ"],
    /* LC_u */		"ư", ["ứ", "ừ", "ử", "ữ", "ự"],
    /* UC_O */		"Ơ", ["Ớ", "Ờ", "Ở", "Ỡ", "Ợ"],
    /* UC_U */		"Ư", ["Ứ", "Ừ", "Ử", "Ữ", "Ự"]
					];
    
    

    var garCARET =  [
    /* LC_a */		["â", "ấ", "ầ", "ẩ", "ẫ", "ậ"],
    /* LC_e */		["ê", "ế", "ề", "ể", "ễ", "ệ"],
    /* LC_i */		[""],
    /* LC_o */		["ô", "ố", "ồ", "ổ", "ỗ", "ộ"],
    /* LC_u */		[""],
    /* LC_y */		[""],
    /* UC_A */		["Â", "Ấ", "Ầ", "Ẩ", "Ẫ", "Ậ"],
    /* UC_E */		["Ê", "Ế", "Ề", "Ể", "Ễ", "Ệ"],
    /* UC_I */		[""],
    /* UC_O */		["Ô", "Ố", "Ồ", "Ổ", "Ỗ", "Ộ"],
    /* UC_U */		[""],
    /* UC_Y */		[""]
					];

    var garPARENTHESIS =  [
    /* LC_a */		["ă", "ắ", "ằ", "ẳ", "ẵ", "ặ"],
    /* LC_e */		[""],
    /* LC_i */		[""],
    /* LC_o */		[""],
    /* LC_u */		[""],
    /* LC_y */		[""],
    /* UC_A */		["Ă", "Ắ", "Ằ", "Ẳ", "Ẵ", "Ặ"],
    /* UC_E */		[""],
    /* UC_I */		[""],
    /* UC_O */		[""],
    /* UC_U */		[""],
    /* UC_Y */		[""]
					];


    var garPLUS =  [
    /* LC_a */		[""],
    /* LC_e */		[""],
    /* LC_i */		[""],
    /* LC_o */		["ơ", "ớ", "ờ", "ở", "ỡ", "ợ"],
    /* LC_u */		["ư", "ứ", "ừ", "ử", "ữ", "ự"],
    /* LC_y */		[""],
    /* UC_A */		[""],
    /* UC_E */		[""],
    /* UC_I */		[""],
    /* UC_O */		["Ơ", "Ớ", "Ờ", "Ở", "Ỡ", "Ợ"],
    /* UC_U */		["Ư", "Ứ", "Ừ", "Ử", "Ữ", "Ự"],
    /* UC_Y */		[""]
					];

    var garVOWEL =  [
    /* LC_a */		["", "á", "à", "ả", "ã", "ạ"],
    /* LC_e */		["", "é", "è", "ẻ", "ẽ", "ẹ"],
    /* LC_i */		["", "í", "ì", "ỉ", "ĩ", "ị"],
    /* LC_o */		["", "ó", "ò", "ỏ", "õ", "ọ"],
    /* LC_u */		["", "ú", "ù", "ủ", "ũ", "ụ"],
    /* LC_y */		["", "ý", "ỳ", "ỷ", "ỹ", "ỵ"],
    /* UC_A */		["", "Á", "À", "Ả", "Ã", "Ạ"],
    /* UC_E */		["", "É", "È", "Ẻ", "Ẽ", "Ẹ"],
    /* UC_I */		["", "Í", "Ì", "Ỉ", "Ĩ", "Ị"],
    /* UC_O */		["", "Ó", "Ò", "Ỏ", "Õ", "Ọ"],
    /* UC_U */		["", "Ú", "Ù", "Ủ", "Ũ", "Ụ"],
    /* UC_Y */		["", "Ý", "Ỳ", "Ỷ", "Ỹ", "Ỵ"]
					];
					
	var gaChar = ["a", "e", "i", "o", "u", "y", "A", "E", "I", "O", "U", "Y"];
	var garUnicode = null;

	var f =	function ($0, $1, $2) {
        var sTemp = "";
        var i = 0;
        var d = 0;
        var ar = null;
        
 		//return "%" + $0 + "%";
       
        //last char
        sTemp = $0.substr($0.length - 1, 1);

		if (sTemp == "'") d = 1;
		if (sTemp == "`") d = 2;
		if (sTemp == "?") d = 3;
		if (sTemp == "~") d = 4;
		if (sTemp == ".") d = 5;
		
        //first char
        sTemp = $0.substr(0, 1);

		for (i = LC_a; i <= UC_Y; i++) { 
			if (sTemp == gaChar[i]) {
				k = i;
				break;
			}
		}
		
		if (garUnicode[k]) {
			ar = garUnicode[k];
			if (ar[d]) {
				return ar[d];
			}
		}
		return $0;
	};


	var f2 =	function ($0, $1, $2) {
        var sTemp = "";
        var k = 0;
        var i = 0;
        var d = 0;
        var ar = null;
       
        //last char
        sTemp = $0.substr($0.length - 1, 1);

		if (sTemp == "'") d = 0;
		if (sTemp == "`") d = 1;
		if (sTemp == "?") d = 2;
		if (sTemp == "~") d = 3;
		if (sTemp == ".") d = 4;
		
        //first char
        sTemp = $0.substr(0, $0.length - 1);

		for (i = 0; i <= 23; i+=2) { 
			if (sTemp == garDAU[i]) {
				ar = garDAU[i+1];
				k = i;
				break;
			}
		}
		
		if (ar[d]) {
			return ar[d];
		}
		return $0;
	};


function toUniCharCode (strIn) {
    var strOut = "";
    var i = 0;

	for (i = 0; i < strIn.length; i++) { 
		if (strIn.charCodeAt(i) > 193) {
			strOut += "&#" + strIn.charCodeAt(i) + ";";
		}
		else {
			strOut += strIn.charAt(i);
		}
	}
    return strOut;
}
        
function ToUnicode(strIn) {
	document.write(VIQR2UNICODE(strIn));
}

function VIQR2UNICODE (strIn) {
    var strOut = "";
        
        //strOut = strIn;

        strOut = toUniCharCode (strIn);

        //PATTERN_CARET ==> ^
		garUnicode = garCARET;
		strOut = strOut.replace(rxPatternCARET, f);
	

        //PATTERN_PARENTHESIS ==> (
		garUnicode = garPARENTHESIS;
		strOut = strOut.replace(rxPatternPARENTHESIS, f);


        //PATTERN_PLUS ==> +
		garUnicode = garPLUS;
		strOut = strOut.replace(rxPatternPLUS, f);


        //PATTERN_VOWEL ==> aeiouy
		garUnicode = garVOWEL;
		strOut = strOut.replace(rxPatternVOWEL, f);

        //dau DD 
        strOut = strOut.replace(rxVn_Dcap, gsDD_Dcap);
        strOut = strOut.replace(rxVn_d, gsDD_d);


        //convert unicode and dau
        strOut = strOut.replace(rxPatternDau, f2);

        //dau escape chars 
        strOut = strOut.replace(rxVnEsc, 
							function ($0, $1, $2) {
								return right($0,1);
							});
        
        strOut = strOut.replace("'", "&#39;");

        return strOut;
}


function fnkeyup (evt) {
	var s = "";
	var unicode_obj = null;
	
	if (bUnicode != true) return;
	
	var evt = (evt) ? evt : ((window.event) ? event : null);
	
	if (evt.keyCode < 39) return;
	
	var objectID = (evt.target) ? evt.target.id : ((evt.srcElement) ? evt.srcElement.id : null);
	if (objectID.indexOf('unicode')!=-1)  unicode_obj = document.getElementById(objectID);
	if (unicode_obj) { 
		s = unicode_obj.innerHTML;
		unicode_obj.innerHTML = VIQR2UNICODE(s);
	}
}