/*只能输入数字和*,不能以0开头 οnkeypress='Amount_keypress(this)' */function Amount_keypress(obj) {    var e = window.event || arguments.callee.caller.arguments[0];    var keyCode = e.keyCode;    var reg = /^[1-9]\d{1,4}$/    if ((obj.value.length == 0) && keyCode == 42) {        event.returnValue = true;        return;    }    if (obj.value.length == 0 && keyCode == 48) {        event.returnValue = false;        return;    }    if ((keyCode > 47 && keyCode < 58)) {        event.returnValue = true;    }    else {        event.returnValue = false;    }}/*只能输入数字,小数点后最多2位 οnkeypress='price_keypress(this)' */function price_keypress(obj) {    var e = window.event || arguments.callee.caller.arguments[0];    var keyCode = e.keyCode;    var reg = /^\d+[.]?\d{1,2}$/;    if (keyCode == 46 || (keyCode >= 48 && keyCode <= 57)) {        if (keyCode == 46 && obj.value.indexOf('.') > -1) {            event.returnValue = false;            return;        }        if (obj.value.indexOf('.') > -1 && (obj.value.length - obj.value.indexOf('.')) > 2) {            event.returnValue = false;            return;        }        event.returnValue = true;    }    else {        event.returnValue = false;    }}

　　

 

.input        {            width: 50px;            text-align: center;            ime-mode:disabled        }