请教如何做右键菜单的弹出窗口

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<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>右键菜单-51windows.com－www.51windows.Net</title>
<style>
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table,TD,DIV{font-family:宋体;font-size:9pt;cursor:default}
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.yellow {
BORDER-RIGHT: #8a6100 2px solid; BORDER-TOP: #ffe3a4 2px solid; BORDER-LEFT: #ffe3a4 2px solid; COLOR: #ffff00; BORDER-BOTTOM: #8a6100 2px solid; BACKGROUND-COLOR: #e19d00
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BORDER-RIGHT: #002200 2px solid; BORDER-TOP: #a6c1df 2px solid; BORDER-LEFT: #a6c1df 2px solid; COLOR: #ffffff; BORDER-BOTTOM: #002200 2px solid; BACKGROUND-COLOR: #3a6ea5
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.green {
BORDER-RIGHT: #002200 2px solid; BORDER-TOP: #b9ffb9 2px solid; BORDER-LEFT: #b9ffb9 2px solid; COLOR: #ffff00; BORDER-BOTTOM: #002200 2px solid; BACKGROUND-COLOR: #008000
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BORDER-RIGHT: #000000 2px solid; BORDER-TOP: #ffffff 2px solid; BORDER-LEFT: #ffffff 2px solid; COLOR: #000080; BORDER-BOTTOM: #000000 2px solid; BACKGROUND-COLOR: #d8d8d0
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</head><body bgcolor="#568EC7">
请点右键,您可以选择样式!
<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>
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<script>
link('pop("http://www.blueidea.com")','蓝色理想');
link('pop("http://www.51windows.net")','无忧视窗');
link('pop("http://www.51js.com")','无忧脚本');
link('pop("http://www.hongen.com")','洪恩在线');
</script></div>
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document.body.onclick=hidemenuie5}
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