How to Use the Media attribute for handhelds of the HTML Link tag?

I currently have the following in my HTML document.

<link REL=StyleSheet HREF="/stylesheets/home.css" TYPE="text/css" MEDIA=screen>
<link REL=StyleSheet HREF="/stylesheets/homedark.css" TYPE="text/css" MEDIA=handheld>

However, nothing changes开发者_Go百科 on a handheld device (my Android phone). Is there something I'm doing wrong, or is it just not this simple?

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You will need to use more advanced media queries, such as those that target screen size

So something more like

<link rel="stylesheet" href="/stylesheets/homedark.css" type="text/css" 
    media="screen and (max-device-width: 480px)">

Inside your stylesheet, it would be something like this

@media only screen and (max-device-width: 480px) {
    //Your styles here
}

http://www.w3.org/TR/css3-mediaqueries/

Simple JS device detection might be helpful:

if( navigator.userAgent.match(/Android/i) || 
    navigator.userAgent.match(/webOS/i) || 
    navigator.userAgent.match(/iPhone/i) || 
    navigator.userAgent.match(/iPod/i)){
     // link to stylesheet
}

An even better thing to do is use some sort of combo... media queries & device / feature detection.

This is a good overview: http://www.csskarma.com/presentations/cssla/slides/mobile_media_touch.pdf (WARNING: pdf file)

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According to w3schools the handheld media type is deprecated anyway. You will need to use media queries to accomplish what you want.

Too bad there isn't a media type for "phone". The ability to dial a number is really the most distinctive difference.

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Maybe your phone doesn't consider itself a handheld according to whatever criteria the W3C uses for that term. Modern mobile browsers aren't that different from a full-blown desktop one and are nowhere near as limited as the original (useless) WAP browsers in dumbphones were. There's usually no real need to output a "handheld" type as the phone browser is better at deciding what/how to show content than the site is.