判断只能输入正数

//只能录入整数
function InputNumber(e) {
    if ($.browser.msie) {  // 判断浏览器
        //if (((event.keyCode > 47) && (event.keyCode < 58)) || (event.keyCode == 8)) {// 判断键值  
        if (((event.keyCode > 47) && (event.keyCode < 58)) || ((event.keyCode > 95) && (event.keyCode < 106)) || (event.keyCode == 8) || (event.keyCode == 46) || (event.keyCode == 37) || (event.keyCode == 39)) { 
            return true;
        } else {
            return false;
        }
    } else {
        //if (((e.which > 47) && (e.which < 58)) || (e.which == 8) || (event.keyCode == 17)) {
        if (((e.which > 47) && (e.which < 58)) || ((e.which > 95) && (e.which < 106)) || (e.which == 8) || (e.which == 46) || (e.which == 37) || (e.which == 39)) { 
            return true;
        } else {
            return false;
        }
    }
}