<asp:TableRow>
                    <asp:TableCell ></asp:TableCell>
                    <asp:TableCell ID="tcWhatIsBarter" align=center class="nav" onMouseOver="this.style.backgroundColor='#1b1e89'" onMouseOut="this.style.backgroundColor='#71bed4'">What Is Barter</asp:TableCell>
                    <asp:TableCell ></asp:TableCell>
                </asp:TableRow>
                <asp:TableRow>
                    <asp:TableCell ></asp:TableCell>
                    <asp:TableCell ID="tcBarterEconomy" align=center class="nav" onMouseOver="this.style.backgroundColor='#1b1e89'" onMouseOut="this.style.backgroundColor='#71bed4'">Barter Economy</asp:TableCell>
                    <asp:TableCell ></asp:TableCell>
                </asp:TableRow>
                <asp:TableRow>
                    <asp:TableCell ></asp:TableCell>
                    <asp:TableCell ID="tcIndustryStatistics" align=center class="nav" onMouseOver="this.style.backgroundColor='#1b1e89'" onMouseOut="this.style.backgroundColor='#71bed4'">Industry Statistics</asp:TableCell>
                    <asp:TableCell ></asp:TableCell>
                </asp:TableRow>
在firefox2.0上工作正常,但在IE7下无反映,为什么?怎么修改?谢谢