右击色块产生不同的下拉菜单
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<DIV align=center>
<CENTER>
<TABLE cellSpacing=0 cellPadding=0 width=400 border=0>
<TBODY>
<TR>
<TD class=menu onclick='c("menu")' align=middle width=50>灰</TD>
<TD class=green onclick='c("green")' align=middle width=50>绿</TD>
<TD class=blue onclick='c("blue")' align=middle width=50>蓝</TD>
<TD class=yellow onclick='c("yellow")' align=middle width=50>黄</TD>
<TD class=menu1 onclick='c("menu1")' align=middle width=50>灰1</TD>
<TD class=blue1 onclick='c("blue1")' align=middle width=50>浅蓝</TD>
<TD class=black onclick='c("black")' align=middle width=50>黑</TD>
<TD align=middle
width=50></TD></TR></TBODY></TABLE></CENTER></DIV>
<div id=ie5menu class=up style="text-align: left;position: absolute; visibility: hidden; width: 85px; z-index: 200;padding:1px">
<script>
link('pop("http://www.knowsky.com")','网页教学');
link('pop("http://www.knowsky.com")','网页教学');
link('pop("http://www.knowsky.com")','网页教学');
link('pop("http://www.knowsky.com")','网页教学');
</script></div>
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