用什么方法，可以通过web程序判断出当前用户的windows主题设置???

<HTML><HEAD><TITLE>系统字体及颜色</TITLE>
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<TABLE align=center border=0 cellPadding=1 cellSpacing=0 width="80%">
  <TBODY>
  <TR>
    <TH><FONT color=#33ff33>你的设置</FONT></TH>
    <TH><FONT color=#33ff33>使用名称</FONT></TH>
    <TH><FONT color=#33ff33>描述</FONT></TH></TR>
  <TR>
    <TD style="BACKGROUND: activeborder"></TD>
    <TD>activeborder</TD>
    <TD>活动窗口的边框</TD></TR>
  <TR>
    <TD style="BACKGROUND: activecaption"></TD>
    <TD>activecaption</TD>
    <TD>活动的标题栏</TD></TR>
  <TR>
    <TD style="BACKGROUND: appworkspace"></TD>
    <TD>appworkspace</TD>
    <TD>应用程序背景</TD></TR>
  <TR>
    <TD style="BACKGROUND: background"></TD>
    <TD>background</TD>
    <TD>桌面</TD></TR>
  <TR>
    <TD style="BACKGROUND: buttonface"></TD>
    <TD>buttonface</TD>
    <TD>按钮表面</TD></TR>
  <TR>
    <TD style="BACKGROUND: buttonhighlight"></TD>
    <TD>buttonhighlight</TD>
    <TD>按钮高光</TD></TR>
  <TR>
    <TD style="BACKGROUND: buttonshadow"></TD>
    <TD>buttonshadow</TD>
    <TD>按钮阴影</TD></TR>
  <TR>
    <TD style="BACKGROUND: buttontext"></TD>
    <TD>buttontext</TD>
    <TD>按钮字体</TD></TR>
  <TR>
    <TD style="BACKGROUND: captiontext"></TD>
    <TD>captiontext</TD>
    <TD>标题字体</TD></TR>
  <TR>
    <TD style="BACKGROUND: graytext"></TD>
    <TD>graytext</TD>
    <TD>灰色文字</TD></TR>
  <TR>
    <TD style="BACKGROUND: highlight"></TD>
    <TD>highlight</TD>
    <TD>选择状态背景</TD></TR>
  <TR>
    <TD style="BACKGROUND: highlighttext"></TD>
    <TD>highlighttext</TD>
    <TD>选择状态字体</TD></TR>
  <TR>
    <TD style="BACKGROUND: inactiveborder"></TD>
    <TD>inactiveborder</TD>
    <TD>非活动的窗口边框</TD></TR>
  <TR>
    <TD style="BACKGROUND: inactivecaption"></TD>
    <TD>inactivecaption</TD>
    <TD>非活动的窗口标题</TD></TR>
  <TR>
    <TD style="BACKGROUND: inactivecaptiontext"></TD>
    <TD>inactivecaptiontext</TD>
    <TD>非活动的窗口标题字体</TD></TR>
  <TR>
    <TD style="BACKGROUND: infobackground"></TD>
    <TD>infobackground</TD>
    <TD>提示背景</TD></TR>
  <TR>
    <TD style="BACKGROUND: infotext"></TD>
    <TD>infotext</TD>
    <TD>提示字体</TD></TR>
  <TR>
    <TD style="BACKGROUND: menu"></TD>
    <TD>menu</TD>
    <TD>菜单背景色</TD></TR>
  <TR>
    <TD style="BACKGROUND: menutext"></TD>
    <TD>menutext</TD>
    <TD>菜单字体</TD></TR>
  <TR>
    <TD style="BACKGROUND: scrollbar"></TD>
    <TD>scrollbar</TD>
    <TD>滚动条背景色</TD></TR>
  <TR>
    <TD style="BACKGROUND: threeddarkshadow"></TD>
    <TD>threeddarkshadow</TD>
    <TD>立体对象的深色</TD></TR>
  <TR>
    <TD style="BACKGROUND: buttonface"></TD>
    <TD>threedface</TD>
    <TD>立体对象的表面</TD></TR>
  <TR>
    <TD style="BACKGROUND: buttonhighlight"></TD>
    <TD>threedhighlight</TD>
    <TD>立体对象的突出</TD></TR>
  <TR>
    <TD style="BACKGROUND: threedlightshadow"></TD>
    <TD>threedlightshadow</TD>
    <TD>立体对象的高光</TD></TR>
  <TR>
    <TD style="BACKGROUND: buttonshadow"></TD>
    <TD>threedshadow</TD>
    <TD>立体对象的阴影</TD></TR>
  <TR>
    <TD style="BACKGROUND: window"></TD>
    <TD>window</TD>
    <TD>窗口的背景</TD></TR>
  <TR>
    <TD style="BACKGROUND: windowframe"></TD>
    <TD>windowframe</TD>
    <TD>窗口的框架</TD></TR>
  <TR>
    <TD style="BACKGROUND: windowtext"></TD>
    <TD>windowtext</TD>
    <TD>视窗字体</TD></TR></TBODY></TABLE>
<DIV align=center><BR>提示:下面的例子分别显示了如何获得用户Window的字体<BR></DIV>
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  <TR>
    <TH><FONT color=#33ff33>字体名称</FONT></TH>
    <TH><FONT color=#33ff33>描述</FONT></TH></TR>
  <TR>
    <TD><EM>no value</EM></TD>
    <TD>默认的字体</TD></TR>
  <TR>
    <TD>caption</TD>
    <TD style="FONT: caption">标题的字体</TD></TR>
  <TR>
    <TD>icon</TD>
    <TD style="FONT: icon">图标下方的字体</TD></TR>
  <TR>
    <TD>menu</TD>
    <TD style="FONT: menu">菜单字体</TD></TR>
  <TR>
    <TD>messagebox</TD>
    <TD style="FONT: messagebox">对话框的字体</TD></TR>
  <TR>
    <TD>smallcaption</TD>
    <TD style="FONT: smallcaption">提示字体</TD></TR>
  <TR>
    <TD>statusbar</TD>
    <TD style="FONT: statusbar">状态栏的字体</TD></TR></TBODY></TABLE><TR><TD>使用:<FONT 
color=#990000> <FONT color=#33ff33>style="background: 名称" </FONT></FONT>如 
style="background: windowframe" 这就显示了窗口框架的颜色。<BR></TD></TR>
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<P>&nbsp;</P>
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