border-width Size?

[dev.cplusplus]

Hi, I have the following problem I hope someone can help me
I have the CSS file

#one
{
border-style: solid;
border-width: 5px
}
#two
{
border-style: solid;
border-width: thick
}
#three
{
border-style: solid;
border-width: thin
}
#four
{
border-style: solid;
border-width: medium
}

and the HTML file

<table>
<tr>
<td id='one'><div id='uno'>border-width: 5px</div></td>
<td id='two'><div id='dos'>border-width: thick</div></td>
<td id='three'><div id='tres'>border-width: thin</div></td>
<td id='four'><div id='cuatro'>border-width: medium</div></td>
</tr>
</table>

As you can see every div has a different border width that is from the CSS file, I want to know what is "border-width: thick" in pixels, cm or some number not in words. I read the explanation I found in the WEB:
thin - Defines a thin border
medium/Default - Defines a medium border
thick - Defines a thick border
Sometimes I need to situated floating objects according to its border so I need to know what is a thin/thick/medium border in numbers.

[~s.o.s~]

Use the getStyles function to get the CSS property of an element. You would probably get the width of the element in pixels but that should work fine for you.

[dev.cplusplus]

I'm using getStyles, but if I request the 'border-width' property of the element, I'm receiving 'thick', but I want to know what is 'thick' in pixel or cm or some value I can use, 'thick' doesn't help me to situated floating objects:

border-style: solid;
border-width: thick

Thanks

[MidiMagic]

These are browser-dependent.