json formatter script

jsonformatter.js

/* 
    jsonformatter.js
    usage 
        construct html table out of given JSON
            var html = json2html(json);
        format json and use output in editable text containers 
            var formattedJSONText = formatJSON(json,'text');
        format json and use output in divs
            var formattedJSONText = formatJSON(json,'html');
*/

var formatJSON = function(strJSON, format, indent){
    var tab = format == "text" ? "    " : "    ";
    var CRLF = format == "text" ? "\n" : "<br/>";
    var prefix = typeof indent == 'undefined' ? tab : indent;
    var array = typeof strJSON == 'object' ? strJSON : JSON.parse(strJSON);
    var str = '{' + CRLF;
    for (item in array){
        if (typeof array[item] != 'object'){
            str += prefix + '"' + item + '": "' + array[item] + '",' + CRLF;
        } else {
            str += prefix + '"' + item + '": ' + formatJSON(array[item], format, prefix + tab) + ',' + CRLF;
        }
    }
    str = str.substring(0,str.length-2) + CRLF;
    str += prefix.substring(0, prefix.length-4) + '}';
    return str;
}

var json2html = function(strJSON, id){
    var array = typeof strJSON == 'object' ? strJSON : JSON.parse(strJSON);
    var str = '<table cellspacing=0 cellpadding=0';
    str += typeof id !== 'undefined' ? ' id="' + id + '" style="display:none;">' : '>';
    var row = 0;
    for (item in array){
        str += (row % 2 == 0) ? '<tr class="alt">' : '<tr>';
        if (typeof array[item] != 'object'){
            str += '<td>'+item+' : </td><td>'+array[item]+'</td></tr>';
        } else {
            var nxtId = pseudoGUID();
            str += '<td>'+item+'</td><td><span onClick=toggle(this,"'+nxtId+'")>[+]</span>'+json2html(array[item], nxtId)+'</td></tr>';
        }
        row++;
    }
    str += '</table>';
    return str;
}

var pseudoGUID = function(){
    var S4 = function() {
       return (((1+Math.random())*0x10000)|0).toString(16).substring(1);
    };
    return (S4()+S4()+"-"+S4()+"-"+S4()+"-"+S4()+"-"+S4()+S4()+S4());
}

var toggle = function(t,e){
    e = document.getElementById(e);
    
    if(e.style.display == 'none'){
        e.style.display = '';
    } else {
        e.style.display = 'none';
    }
    
    if (t.innerHTML == '[+]'){
        t.innerHTML = '[-]';
    } else {
        t.innerHTML = '[+]';
    }
}