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Selasa, 27 September 2011

CSS cursors

Microsoft Internet Explorer 4+ and Netscape 6+ supports customized cursors defined with CSS.

Although the cursors will not have the customized look in other browsers it usually doesn't ruin anything. These browsers will simply show the normal arrow-cursor which would be same case as if you refrained from customizing cursors at all.

So unless the page really doesn't work without the customized cursor there shouldn't be technical reasons for choosing not to.

However there might be other reasons for thinking twice before adding custom cursor to your pages. Many users are easily confused or irritated when a site breaks the standard user interface.




CURSOR PROPERTIES

LookValuesLookNSIEExample
cursor-sample
defaultTEST6+4+cursor:default
cursor-sample
crosshairTEST6+4+cursor:crosshair
cursor-sample
handTEST 4+cursor:hand
cursor-sample
pointerTEST6+ cursor:pointer
cursor-sample
Cross browserTEST 4+cursor:pointer;cursor:hand
cursor-sample
moveTEST6+4+cursor:move
cursor-sample
textTEST6+4+cursor:text
cursor-sample
waitTEST6+4+cursor:wait
cursor-sample
helpTEST6+4+cursor:help
cursor-sample
n-resizeTEST6+4+cursor:n-resize
cursor-sample
ne-resizeTEST6+4+cursor:ne-resize
cursor-sample
e-resizeTEST6+4+cursor:e-resize
cursor-sample
se-resizeTEST6+4+cursor:se-resize
cursor-sample
s-resizeTEST6+4+cursor:s-resize
cursor-sample
sw-resizeTEST6+4+cursor:sw-resize
cursor-sample
w-resizeTEST6+4+cursor:w-resize
cursor-sample
nw-resizeTEST4+4+cursor:nw-resize

cursor-sample
progressTEST 6+cursor:progress

cursor-sample
not-allowedTEST 6+cursor:not-allowed

cursor-sample
no-dropTEST 6+cursor:no-drop

cursor-sample
vertical-textTEST 6+cursor:vertical-text

cursor-sample
all-scrollTEST 6+cursor:all-scroll

cursor-sample
col-resizeTEST 6+cursor:col-resize

cursor-sample
row-resizeTEST 6+cursor:row-resize

cursor-sample
cursor:url(uri)TEST 6+cursor:url(uri)

4P:problems, 4M:Mac only, 4W:Windows only




ADDING A CUSTOMIZED CURSOR

The syntax for a customized cursor is this:
(Position the mouse over each link to see the effect)

Selector {cursor:value}

For example:

<html>
<head>
<style type="text/css">
.xlink {cursor:crosshair}
.hlink{cursor:help}

</style>
</head>

<body>
<b>
<a href="mypage.htm" class="xlink">CROSS LINK</a>
<br>
<a href="mypage.htm" class="hlink">HELP LINK</a>
</b>
</body>
</html>



The links from the above example would look like this:

CROSS LINK

HELP LINK





REDEFINING THE CURSOR FOR ENTIRE PAGES

If you want to redefine the cursor so that it's not only showing up when moved over a link, you simply specify the desired cursor using the body-selector.

For example:

<html>
<head>
<style type="text/css">
body {cursor:crosshair}
</style>
</head>

<body>
<b>
SOME TEXT
<br>
<a href="mypage.htm">ONE LINK</a>
<br>
<a href="mypage.htm">ANOTHER LINK</a>
</b>
</body>
</html>


Click here to open a window that shows the result of the above example.




REDEFINING THE CURSOR FOR AREAS ON A PAGE

If you want one look of the cursor in one area of the page and another look of the cursor in another area you can do it with context dependant selectors.

This way, you create different styles for links, that are dependant on the context. Now if the context is set with a dummy tag, such as <span> you don't have to specify the desired style each and every time there is a link in the section.

For example:

<html>
<head>
<style type="text/css">
.xlink A{cursor:crosshair}
.hlink A{cursor:help}

</style>
</head>

<body>
<b>
<span class="xlink">
<a href="mypage.htm">CROSS LINK 1</a><br>
<a href="mypage.htm">CROSS LINK 2</a><br>
<a href="mypage.htm">CROSS LINK 3</a><br>
</span>
<br>
<span class="hlink">
<a href="mypage.htm">HELP LINK 1</a><br>
<a href="mypage.htm">HELP LINK 2</a><br>
<a href="mypage.htm">HELP LINK 3</a><br>
</span>
</b>
</body>
</html>



The links from the above example would look like this:

CROSS LINK 1
CROSS LINK 2
CROSS LINK 3

HELP LINK 1
HELP LINK 2
HELP LINK 3

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