实现在表单内按回车键，执行指定按钮的事件
<script language="javascript">
function WebForm_FireDefaultButton(event, target) {
if (event.keyCode == 13 && !(event.srcElement && (event.srcElement.tagName.toLowerCase() == "textarea"))) {
var defaultButton = document.getElementById(target);
if (defaultButton && typeof(defaultButton.click) != "undefined") {
defaultButton.click();
event.cancelBubble = true;
if (event.stopPropagation) event.stopPropagation();
return false;
}
}
return true;
}
</script>
<form id="form1" runat="server" method=post onkeypress="javascript:return WebForm_FireDefaultButton(event,'btnTest2');">
<asp:Button ID=btnTest1 runat=server Text="test1"
OnClientClick='alert("test1");' ></asp:Button>
<asp:Button ID=btnTest2 runat=server Text="test2"
OnClientClick='alert("test2");' ></asp:Button>
</form>
