function rnd(){ return String((new Date()).getTime()).replace(/\D/gi,'') }


	function utf8_encode ( argString ) {
	    // http://kevin.vanzonneveld.net
	    // +   original by: Webtoolkit.info (http://www.webtoolkit.info/)
	    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
	    // +   improved by: sowberry
	    // +    tweaked by: Jack
	    // +   bugfixed by: Onno Marsman
	    // +   improved by: Yves Sucaet
	    // +   bugfixed by: Onno Marsman
	    // +   bugfixed by: Ulrich
	    // *     example 1: utf8_encode('Kevin van Zonneveld');
	    // *     returns 1: 'Kevin van Zonneveld'
	
	    var string = (argString+''); // .replace(/\r\n/g, "\n").replace(/\r/g, "\n");
	
	    var utftext = "";
	    var start, end;
	    var stringl = 0;
	
	    start = end = 0;
	    stringl = string.length;
	    for (var n = 0; n < stringl; n++) {
	        var c1 = string.charCodeAt(n);
	        var enc = null;
	
	        if (c1 < 128) {
	            end++;
	        } else if (c1 > 127 && c1 < 2048) {
	            enc = String.fromCharCode((c1 >> 6) | 192) + String.fromCharCode((c1 & 63) | 128);
	        } else {
	            enc = String.fromCharCode((c1 >> 12) | 224) + String.fromCharCode(((c1 >> 6) & 63) | 128) + String.fromCharCode((c1 & 63) | 128);
	        }
	        if (enc !== null) {
	            if (end > start) {
	                utftext += string.substring(start, end);
	            }
	            utftext += enc;
	            start = end = n+1;
	        }
	    }
	
	    if (end > start) {
	        utftext += string.substring(start, string.length);
	    }
	
	    return utftext;
	}
	
	function serialize (mixed_value) {
	    // http://kevin.vanzonneveld.net
	    // +   original by: Arpad Ray (mailto:arpad@php.net)
	    // +   improved by: Dino
	    // +   bugfixed by: Andrej Pavlovic
	    // +   bugfixed by: Garagoth
	    // +      input by: DtTvB (http://dt.in.th/2008-09-16.string-length-in-bytes.html)
	    // +   bugfixed by: Russell Walker (http://www.nbill.co.uk/)
	    // +   bugfixed by: Jamie Beck (http://www.terabit.ca/)
	    // +      input by: Martin (http://www.erlenwiese.de/)
	    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
	    // -    depends on: utf8_encode
	    // %          note: We feel the main purpose of this function should be to ease the transport of data between php & js
	    // %          note: Aiming for PHP-compatibility, we have to translate objects to arrays
	    // *     example 1: serialize(['Kevin', 'van', 'Zonneveld']);
	    // *     returns 1: 'a:3:{i:0;s:5:"Kevin";i:1;s:3:"van";i:2;s:9:"Zonneveld";}'
	    // *     example 2: serialize({firstName: 'Kevin', midName: 'van', surName: 'Zonneveld'});
	    // *     returns 2: 'a:3:{s:9:"firstName";s:5:"Kevin";s:7:"midName";s:3:"van";s:7:"surName";s:9:"Zonneveld";}'
	
	    var _getType = function (inp) {
	        var type = typeof inp, match;
	        var key;
	        if (type == 'object' && !inp) {
	            return 'null';
	        }
	        if (type == "object") {
	            if (!inp.constructor) {
	                return 'object';
	            }
	            var cons = inp.constructor.toString();
	            match = cons.match(/(\w+)\(/);
	            if (match) {
	                cons = match[1].toLowerCase();
	            }
	            var types = ["boolean", "number", "string", "array"];
	            for (key in types) {
	                if (cons == types[key]) {
	                    type = types[key];
	                    break;
	                }
	            }
	        }
	        return type;
	    };
	    var type = _getType(mixed_value);
	    var val, ktype = '';
	    
	    switch (type) {
	        case "function": 
	            val = ""; 
	            break;
	        case "boolean":
	            val = "b:" + (mixed_value ? "1" : "0");
	            break;
	        case "number":
	            val = (Math.round(mixed_value) == mixed_value ? "i" : "d") + ":" + mixed_value;
	            break;
	        case "string":
	            mixed_value = this.utf8_encode(mixed_value);
	            val = "s:" + encodeURIComponent(mixed_value).replace(/%../g, 'x').length + ":\"" + mixed_value + "\"";
	            break;
	        case "array":
	        case "object":
	            val = "a";
	            /*
	            if (type == "object") {
	                var objname = mixed_value.constructor.toString().match(/(\w+)\(\)/);
	                if (objname == undefined) {
	                    return;
	                }
	                objname[1] = this.serialize(objname[1]);
	                val = "O" + objname[1].substring(1, objname[1].length - 1);
	            }
	            */
	            var count = 0;
	            var vals = "";
	            var okey;
	            var key;
	            for (key in mixed_value) {
	                ktype = _getType(mixed_value[key]);
	                if (ktype == "function") { 
	                    continue; 
	                }
	                
	                okey = (key.match(/^[0-9]+$/) ? parseInt(key, 10) : key);
	                vals += this.serialize(okey) +
	                        this.serialize(mixed_value[key]);
	                count++;
	            }
	            val += ":" + count + ":{" + vals + "}";
	            break;
	        case "undefined": // Fall-through
	        default: // if the JS object has a property which contains a null value, the string cannot be unserialized by PHP
	            val = "N";
	            break;
	    }
	    if (type != "object" && type != "array") {
	        val += ";";
	    }
	    return val;
	}