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<h1>CSS border-top-width Property</h1>
<hr />
<a href="css_reference.asp"><img class="navup" src="../images/up.gif" alt="CSS Reference" border="0" /> Complete CSS Reference</a>
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<h2>Definition</h2>
<p>The border-top-width property sets the width of an element's top border.</p>
<p><b>Inherited:</b> No</p>
<p><b>Note:</b> Always declare the border-style property before the border-width
property. An element must have borders before you change the width of them.</p>
<hr />
<h2><b>JavaScript Syntax</b></h2>
<p>CSS properties can also be dynamically changed with a JavaScript.</p>
<p><b>Scripting Syntax:</b> <i>object</i>.style.borderTopWidth="thick"</p>
<p>In our HTML DOM tutorial you can find more details about the
<a href="../htmldom/prop_style_bordertopwidth.asp">borderTopWidth property</a>.</p>
<p>In our HTML DOM tutorial you can also find a full
<a href="../htmldom/dom_obj_style.asp">Style Object Reference</a>.</p>
<hr />
<h2>Example</h2>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr>
<td valign="top">
<p>table<br />
{ <br />
border-style: solid;<br />
border-top-width: thin<br />
}</p>
<p>table<br />
{ <br />
border-style: solid;<br />
border-top-width: 0.5cm<br />
}</p>
</td>
</tr>
</table>
<h2>Possible Values</h2>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
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<th align="left" valign="top">Value</th>
<th align="left" valign="top">Description</th>
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<tr>
<td valign="top">thin</td>
<td valign="top">Defines a thin top border.</td>
</tr>
<tr>
<td valign="top">medium</td>
<td valign="top">Default. Defines a medium top border.</td>
</tr>
<tr>
<td valign="top">thick</td>
<td valign="top">Defines a thick top border.</td>
</tr>
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