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<h1>CSS font-size-adjust Property</h1>
<hr />
<a href="css_reference.asp"><img class="navup" src="../images/up.gif" alt="CSS Reference" border="0" /> Complete CSS Reference</a>
<hr />
<h2>Definition</h2>
<p> The ratio between the height of the font's lowercase letter "x" and the
height of the "font-size" is called a font's <b>aspect value</b>.
If the aspect value is high, the font will be legible when it is set to a smaller
size. For example: Verdana has an aspect value of 0.58 (means that when
font size is 100 px, its x-height is 58 px). Times New Roman has an aspect value of 0.46.
This means that Verdana is more legible at smaller sizes than Times New Roman.</p>
<p>The font-size-adjust property specifies an aspect value for an element that will preserve the x-height of the first-choice font.</p>
<p><b>Inherited:</b> Yes</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.fontSizeAdjust="0.70"</p>
<p>In our HTML DOM tutorial you can find more details about the
<a href="../htmldom/prop_style_fontsizeadjust.asp">fontSizeAdjust 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">h2<br />
{<br />
font-size-adjust: 0.58<br />
}
</td>
</tr>
</table>
<h2>Possible Values</h2>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr>
<th align="left" valign="top">Value</th>
<th align="left" valign="top">Description</th>
</tr>
<tr>
<td valign="top">none</td>
<td valign="top">Default. Do not preserve the font's x-height if
the font is unavailable</td>
</tr>
<tr>
<td valign="top"><i>number</i></td>
<td valign="top">Defines the aspect value ratio for the font
<p>The formula to use:</p>
<p>font-size of first-choice font*(font-size-adjust/aspect value of available
font) = font-size to apply to available font</p>
<p>Example:</p>
<p>If 14px Verdana (aspect value of 0.58) was unavailable, but an available font had an aspect value of 0.46, the font-size of the substitute would be 14 * (0.58/0.46) =
17.65px</p>
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<hr />
<h2>Try-It-Yourself Demos</h2>
<p><a target="_blank" href="tryit.asp@filename=trycss_font-size-adjust">Set the
size of the font using font-size-adjust</a><br />
This example demonstrates how to set the size of a font using font-size-adjust.<br />
</p>
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