function isFloat(s) {
    var n = s
    return n.length>0 && !(/[^0-9.]/).test(n) ;
}
 
function toFixed2(val) {
    val = new String(val);
    
    valtab = val.split('.');
    if(valtab.length==1)
            val = val+',00';
    else
    if(valtab.length==2)
            if(valtab[1].length==1)
                    val = val+'0';
    return val;
}
 
function setPointer(field) {
        var prow = new String(field);
        prow = prow.replace(',', '.');
        var prow = (Math.round(prow*100)/100);
        prow = toFixed2(prow);
        prow = prow.replace('.', ',');
        return prow;
}