function unserialize(data){
    // http://kevin.vanzonneveld.net
    // +     original by: Arpad Ray (mailto:arpad@php.net)
    // +     improved by: Pedro Tainha (http://www.pedrotainha.com)
    // +     bugfixed by: dptr1988
    // +      revised by: d3x
    // +     improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // %            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: unserialize('a:3:{i:0;s:5:"Kevin";i:1;s:3:"van";i:2;s:9:"Zonneveld";}');
    // *       returns 1: ['Kevin', 'van', 'Zonneveld']
    // *       example 2: unserialize('a:3:{s:9:"firstName";s:5:"Kevin";s:7:"midName";s:3:"van";s:7:"surName";s:9:"Zonneveld";}');
    // *       returns 2: {firstName: 'Kevin', midName: 'van', surName: 'Zonneveld'}
    
    var error = function (type, msg, filename, line){throw new window[type](msg, filename, line);};
    var read_until = function (data, offset, stopchr){
        var buf = [];
        var chr = data.slice(offset, offset + 1);
        var i = 2;
        while(chr != stopchr){
            if((i+offset) > data.length){
                error('Error', 'Invalid');
            }
            buf.push(chr);
            chr = data.slice(offset + (i - 1),offset + i);
            i += 1;
        }
        return [buf.length, buf.join('')];
    };
    var read_chrs = function (data, offset, length){
        buf = [];
        for(var i = 0;i < length;i++){
            var chr = data.slice(offset + (i - 1),offset + i);
            buf.push(chr);
        }
        return [buf.length, buf.join('')];
    };
    var _unserialize = function (data, offset){
        if(!offset) offset = 0;
        var buf = [];
        var dtype = (data.slice(offset, offset + 1)).toLowerCase();
        
        var dataoffset = offset + 2;
        var typeconvert = new Function('x', 'return x');
        var chrs = 0;
        var datalength = 0;
        
        switch(dtype){
            case "i":
                typeconvert = new Function('x', 'return parseInt(x)');
                var readData = read_until(data, dataoffset, ';');
                var chrs = readData[0];
                var readdata = readData[1];
                dataoffset += chrs + 1;
            break;
            case "b":
                typeconvert = new Function('x', 'return (parseInt(x) == 1)');
                var readData = read_until(data, dataoffset, ';');
                var chrs = readData[0];
                var readdata = readData[1];
                dataoffset += chrs + 1;
            break;
            case "d":
                typeconvert = new Function('x', 'return parseFloat(x)');
                var readData = read_until(data, dataoffset, ';');
                var chrs = readData[0];
                var readdata = readData[1];
                dataoffset += chrs + 1;
            break;
            case "n":
                readdata = null;
            break;
            case "s":
                var ccount = read_until(data, dataoffset, ':');
                var chrs = ccount[0];
                var stringlength = ccount[1];
                dataoffset += chrs + 2;
                
                var readData = read_chrs(data, dataoffset+1, parseInt(stringlength));
                var chrs = readData[0];
                var readdata = readData[1];
                dataoffset += chrs + 2;
                if(chrs != parseInt(stringlength) && chrs != readdata.length){
                    error('SyntaxError', 'String length mismatch');
                }
            break;
            case "a":
                var readdata = {};
                
                var keyandchrs = read_until(data, dataoffset, ':');
                var chrs = keyandchrs[0];
                var keys = keyandchrs[1];
                dataoffset += chrs + 2;
                
                for(var i = 0;i < parseInt(keys);i++){
                    var kprops = _unserialize(data, dataoffset);
                    var kchrs = kprops[1];
                    var key = kprops[2];
                    dataoffset += kchrs;
                    
                    var vprops = _unserialize(data, dataoffset);
                    var vchrs = vprops[1];
                    var value = vprops[2];
                    dataoffset += vchrs;
                    
                    readdata[key] = value;
                }
                
                dataoffset += 1;
            break;
            default:
                error('SyntaxError', 'Unknown / Unhandled data type(s): ' + dtype);
            break;
        }
        return [dtype, dataoffset - offset, typeconvert(readdata)];
    };
    return _unserialize(data, 0)[2];
}

function makeCurrency(field){
	num=field.value;
	num = num.toString().replace(/\$|\,/g,'');
	if(isNaN(num)) {
		num = "0";
		alert ("You must enter a number in \"" + field.getAttribute('vname') + "\"");
	}
	sign = (num == (num = Math.abs(num)));
	num = Math.floor(num*100+0.50000000001);
	cents = num%100;
	num = Math.floor(num/100).toString();
	if(cents<10)
	cents = "0" + cents;
	for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
	//num = num.substring(0,num.length-(4*i+3))+','+
	num.substring(num.length-(4*i+3));
	var newnum = (((sign)?'':'-') + num + '.' + cents);
	field.value=newnum;
}

function ltrim(stringToTrim) {
	return stringToTrim.replace(/^\s+/,"");
}


function validateField(thisfield) {
        var valid=true;
                if (thisfield.getAttribute('vdt') != undefined) {
                        switch(thisfield.getAttribute('vdt')) {
                                case "text":
								thisfield.value=ltrim(thisfield.value);
                                if (thisfield.value == "") {
                                        if (!thisfield.getAttribute('vname')) {
                                                fieldName = thisfield.name;
                                                fieldName = fieldName.replace (/_/g, " ");
                                        }
                                        else
                                        {
                                                fieldName = thisfield.getAttribute('vname');
                                        }
                                        alert("\"" + fieldName + "\" must be filled out.");
                                        valid=false;
                                        }
                                break
                                case "number":
                                if (thisfield.value == "") {
                                        if (!thisfield.getAttribute('vname')) {
                                                fieldName = thisfield.name;
                                                fieldName = fieldName.replace (/_/g, " ");
                                        }
                                        else
                                        {
                                                fieldName = thisfield.getAttribute('vname');
                                        }
                                        alert("\"" + fieldName + "\" must contain a number.");
                                        valid=false;
                                        }
                                break
                                case "e-mail":
                                apos=thisfield.value.indexOf("@")
                                dotpos=thisfield.value.lastIndexOf(".")
                                if (apos<1||dotpos-apos<2) {
                                        if (!thisfield.getAttribute('vname')) {
                                                fieldName = thisfield.name;
                                                fieldName = fieldName.replace (/_/g, " ");
                                        }
                                        else
                                        {
                                                fieldName = thisfield.getAttribute('vname');
                                        }
                                        alert("\"" + fieldName + "\" must contain a valid e-mail address.");
                                        valid=false;
                                        }
                                break
								case "cost":
                                 if (isNaN(thisfield.value)) {
                                        if (!thisfield.getAttribute('vname')) {
                                                fieldName = thisfield.name;
                                                fieldName = fieldName.replace (/_/g, " ");
                                        }
                                        else
                                        {
                                                fieldName = thisfield.getAttribute('vname');
                                        }
                                        alert("\"" + fieldName + "\" must contain a valid cost.");
                                        valid=false;
                                        }
                                break
                        }
                }
 if (!valid) {return false} else {return true};
}

function validateFields(thisform) {
	 var valid=true;
	 var validRet=true;
	 for (i=0; i<thisform.elements.length; i++) {
		if (thisform.elements[i].getAttribute('vdt') != undefined) {
				validRet=validateField(thisform.elements[i]);
				if (!validRet) {
					valid=false;
					i=thisform.elements.lentgh;
				}
			}
		}
	if (!valid) {return false} else {return true};
}

function addLine(id,line,linecount){
   linecount++;
   table = document.getElementById(id);
   //var newRow = table.tBodies[0].rows[1].cloneNode(true);
   table.innerHTML=table.innerHTML+line.replace(/\[\[x\]\]/g,linecount);
   return(linecount);
}