HTML斜线表头

<HTML>
<HEAD>
<TITLE>斜线表头</TITLE>
</HEAD>
<script   Language="javascript">
function   a(x,y,color)
{document.write("<img   border='0'   style='position:   absolute;   left:   "+(x)+";   top:   "+(y)+";background-color:   "+color+"'   src='px.gif'   width=1   height=1>")}
</script>

<body   leftmargin=0   topmargin=0>   <br>
<TABLE   border=0   bgcolor="000000"   cellspacing="1"   width=400 >
<TR   bgcolor="FFFFFF">
<TD   width="111"   height="52"   ><table   width="100%"   height="100%"   border="0"   cellpadding="0"   cellspacing="0">
<tr>
<td   id="td1"></td>
<td>成绩</td>
</tr>
<tr>
<td>姓名</td>
<td id="td2"></td>
</tr>
</table></TD>
<TD   width="81">数学</TD>
<TD   width="96">英语</TD>
<TD   width="99">C语言</TD>
</TR>
<TR   bgcolor="FFFFFF">
<TD>张三</TD>
<TD>55</TD>
<TD>66</TD>
<TD>77</TD>
</TR>
<TR   bgcolor="FFFFFF">
<TD>李四</TD>
<TD>99</TD>
<TD>68</TD>
<TD>71</TD>
</TR>
<TR   bgcolor="FFFFFF">
<TD>王五</TD>
<TD>33</TD>
<TD>44</TD>
<TD>55</TD>
</TR>
</TABLE>
<script>
function   getTop(tdobj)
{
vParent   =   tdobj.offsetParent;
t   =   tdobj.offsetTop;
while   (vParent.tagName.toUpperCase()   !=   "BODY")
{
t   +=   vParent.offsetTop;
vParent   =   vParent.offsetParent;
}
return   t;
}

function   getLeft(tdobj)
{
vParent   =   tdobj.offsetParent;
t   =   tdobj.offsetLeft;
while   (vParent.tagName.toUpperCase()   !=   "BODY")
{
t   +=   vParent.offsetLeft;
vParent   =   vParent.offsetParent;
}
return   t;
}
function   line(x1,y1,x2,y2,color)
{
var   tmp
if(x1>=x2)
{
tmp=x1;
x1=x2;
x2=tmp;
tmp=y1;
y1=y2;
y2=tmp;
}
for(var   i=x1;i<=x2;i++)
{
x   =   i;
y   =   (y2   -   y1)   /   (x2   -   x1)   *   (x   -   x1)   +   y1;
a(x,y,color);
}
}
//line(1,1,100,100,"000000");
line(getLeft(td1),getTop(td1),getLeft(td1)+td1.offsetWidth,getTop(td1)+td1.offsetHeight,'#000000');
line(getLeft(td2),getTop(td2),getLeft(td2)+td2.offsetWidth,getTop(td2)+td2.offsetHeight,'#000000');
</script>
</BODY>
</HTML>