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CSS+js放大镜

王朝html/css/js·作者佚名  2008-10-07
宽屏版  字体: |||超大  

<head>

<title>CSS Fisheye</title>

<style type="text/css">

span {font-size: x-small}

</style>

<script language="JavaScript" type="text/javascript">

<!--

function convertPreBlocks() {}

var regular = "x-small";

function bigger(thing){

thing.style.fontSize = "large";

siblingElement = thing.previousSibling;

while(siblingElement) {

if(siblingElement.tagName=="SPAN") {

siblingElement.style.fontSize = "medium";

break;

}

siblingElement = siblingElement.previousSibling;

}

siblingElement = thing.nextSibling;

while(siblingElement) {

if(siblingElement.tagName=="SPAN") {

siblingElement.style.fontSize = "medium";

break;

}

siblingElement = siblingElement.nextSibling;

}

}

function normal(thing){

thing.style.fontSize = regular;

siblingElement = thing.previousSibling;

while(siblingElement) {

if(siblingElement.tagName=="SPAN") {

siblingElement.style.fontSize = regular;

break;

}

siblingElement = siblingElement.previousSibling;

}

siblingElement = thing.nextSibling;

while(siblingElement) {

if(siblingElement.tagName=="SPAN") {

siblingElement.style.fontSize = regular;

break;

}

siblingElement = siblingElement.nextSibling;

}

}

// -->

</script>

</head>

<body>

<h1>CSS Fisheye</h1>

<p>Run your mouse over the text below to see the effect. It's implemented using

CSS and Javascript. I got the idea from this <a href="fisheye'http://www.samuelwan.com/downloads/com.samuelwan.eidt/fisheyemenu/FisheyeMenuDemo.html">fisheye

demo</a>, which uses the effect for menus, but is implemented using Flash. Laur

at <a href="Grapefruit'http://www.grapefruitdesign.com/">Grapefruit Designs</a> pointed

to the same technique implemented as a Java applet at <a href="HCIL'http://www.cs.umd.edu/hcil/fisheyemenu/fisheyemenu-demo.shtml">HCIL,

Univ. of Maryland</a>, and suggested that the idea had probably been around

since the 1960's. It also seems that Ted Nelson had described this and similar

techniques ("<a href="billowing'http://xanadu.com/zigzag/fw99/billowing.html">billowing

and undulating text</a>") in relation to his Xanadu project back in 1999.</p>

<p>My <a href="fisheye-old.html">earlier version</a> only worked on Internet Explorer,

but the version here has been fixed for other browsers by <a href="Seairth'http://www.seairth.com/blog">Seairth

Jacobs</a>. Also the previous version used <a href=...> to mark the lines,

the current version uses <span> <i>("for no particular reason")</i>. </p>

<p>

<span onmouseover="bigger(this)" onmouseout="normal(this)">Tiger, tiger, burning

bright,</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">In the forest of

the night,</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">What immortal hand

or eye</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">Could frame thy fearful

symmetry?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">In what distant deeps

or skies</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">Burnt the fire of

thine eyes?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">On what wings dare

he aspire?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">What the hand dare

seize the fire?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">And what shoulder,

and what art,</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">Could twist the sinews

of thy heart?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">When thy heart began

to beat,</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">What dread hand forged

thy dread feet?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">What the hammer?

What the chain?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">In what furnace was

thy brain?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">What the anvil? What

dread grasp</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">Dared its deadly

terrors clasp?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">When the stars threw

down their spears</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">And watered heaven

with their tears,</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">Did He smile his

work to see?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">Did He who made the

lamb make thee?</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">Tiger, tiger, on

the mat,</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">You're nothing but

a pussy cat,</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">But damn your eyes

and rue the day!</span><br/>

<span onmouseover="bigger(this)" onmouseout="normal(this)">I have to clean your

litter tray.</span> </p>

<p><i>with apologies to William Blake</i></p>

<p><a href="Comments'http://66.70.191.189/cgi-bin/mt-comments.cgi?entry_id=1971">Comments

appreciated</a></p>

</body>

 
 
 
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