设置多个回车默认按钮

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>无标题页</title>
    <script type="text/javascript">
    function WebForm_DefaultButton(event, target) {
            var __nonMSDOMBrowser = (window.navigator.appName.toLowerCase().indexOf('explorer') == -1);
            if (event.keyCode == 13 && !(event.srcElement && (event.srcElement.tagName.toLowerCase() == "textarea"))) {
            var defaultButton;

            if (__nonMSDOMBrowser) {
                defaultButton = document.getElementById(target);
            }
            else {
                defaultButton = document.all[target];
            }

            if (defaultButton && typeof(defaultButton.click) != "undefined") {
                defaultButton.click();
                event.cancelBubble = true;
                if (event.stopPropagation) event.stopPropagation();
                return false;
            }

        }
        return true;
    }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div onkeypress="return WebForm_DefaultButton(event, 'Button1')">
        <input id="Text1" type="text" /><input id="Button1" onclick="alert('d')" type="button" value="button" />
    </div>
    <div onkeypress="return WebForm_DefaultButton(event, 'Button2')">
       <input id="Text2" type="text" /> <input id="Button2" onclick="alert('d2')" type="button" value="button" />
    </div>
    </form>
</body>
</html>

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