var Url = {
 
    // public method for url encoding
    encode : function (string) {
        return escape(this._utf8_encode(string));
    },
 
    // public method for url decoding
    decode : function (string) {
        return this._utf8_decode(unescape(string));
    },
 
    // private method for UTF-8 encoding
    _utf8_encode : function (string) {
        string = string.replace(/\r\n/g,"\n");
        var utftext = "";
 
        for (var n = 0; n < string.length; n++) {
 
            var c = string.charCodeAt(n);
 
            if (c < 128) {
                utftext += String.fromCharCode(c);
            }
            else if((c > 127) && (c < 2048)) {
                utftext += String.fromCharCode((c >> 6) | 192);
                utftext += String.fromCharCode((c & 63) | 128);
            }
            else {
                utftext += String.fromCharCode((c >> 12) | 224);
                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                utftext += String.fromCharCode((c & 63) | 128);
            }
 
        }
 
        return utftext;
    },
 
    // private method for UTF-8 decoding
    _utf8_decode : function (utftext) {
        var string = "";
        var i = 0;
        var c = c1 = c2 = 0;
 
        while ( i < utftext.length ) {
 
            c = utftext.charCodeAt(i);
 
            if (c < 128) {
                string += String.fromCharCode(c);
                i++;
            }
            else if((c > 191) && (c < 224)) {
                c2 = utftext.charCodeAt(i+1);
                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                i += 2;
            }
            else {
                c2 = utftext.charCodeAt(i+1);
                c3 = utftext.charCodeAt(i+2);
                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                i += 3;
            }
 
        }
 
        return string;
    }
 
}


function isNumberKey(evt)
{
    var charCode = (evt.which) ? evt.which : event.keyCode
    if (charCode > 31 && (charCode < 48 || charCode > 57))
    return false;

    return true;
}

function textCounter(maxlimit,textArea,countdisplay) {
    var tArea=document.getElementById(textArea);
    var counter=document.getElementById(countdisplay);
    var commentCount = tArea.value.length;
    var newComment = tArea.value.slice(0, maxlimit);
    if (commentCount <= maxlimit){
        if (countdisplay!="")
        {
        counter.value = commentCount;
        }
    }else{
        alert("The maximum character limit has been reached.");
        tArea.value = newComment;
        tArea.blur();
        if (countdisplay!="")
        {counter.value = newComment.length;}
    }
}

function toggleBlock(blockID)
{
    var htmlBlock=document.getElementById(blockID);
    var mode=htmlBlock.style.display;
    mode=(mode=='block')?'none':'block';
    htmlBlock.style.display=mode;       
    
}