function filteringNumberKey(e){
    if (!e) var e = window.event;
    if (!((e.keyCode >= 48 && e.keyCode <= 57)
        || (e.keyCode >= 96 && e.keyCode <= 105)
        || (e.keyCode == 9)
        || (e.keyCode == 8)
        || (e.keyCode == 37)
        || (e.keyCode == 39)
        || (e.keyCode == 35)
        || (e.keyCode == 36)
        || (e.keyCode == 46)
        || (e.keyCode == 16)
        || (e.keyCode == 20)
        || (e.keyCode == 18)
        || (e.keyCode == 17)
        || (e.keyCode == 144))){
        e.preventDefault ? e.preventDefault() : e.returnValue = false; 
        return false;
    }
}