Weird Spam Technique

I recieved a spam email recently that got through my filter even though it had the words “Prozac, Viagra” etc in it. I had a look at the source and it was like this:

I put a border on to make it clearer – have a look at it in a browser.

[CODE]
<TABLE style=”BORDER-WIDTH: 0px;” cellPadding=0 cellSpacing=0 border=1>
<TR>
<TD><FONT face=”Courier”>P X V C A V</FONT></TD>
<TD><FONT face=”Courier”>r a A I m I</FONT></TD>
<TD><FONT face=”Courier”>o n L A b A</FONT></TD>
<TD><FONT face=”Courier”>z a I L i G</FONT></TD>
<TD><FONT face=”Courier”>a x U I e R</FONT></TD>
<TD><FONT face=”Courier”>c &nbsp;<BR> M S n A</FONT></TD>
<TD><FONT face=”Courier”>&nbsp;<BR> &nbsp;<BR> &nbsp;85,45 &nbsp;99,95 =
&nbsp;<BR> &nbsp;69,95</FONT></TD>
<TD width=100%></TD>
</TR>
</TABLE>
[/CODE]

I can’t see how this works, the <TD width=100%></TD> has the effect of flipping the table – can anyone explain why this happens? I thought they were exploiting some kind of browser bug but it looked fine on every browser i tested it on.

Also in #HTML _↴