网页特效大全~~~~
<script language="javascript" type="text/javascript">
<!--
// convert a single digit (0 - 16) into hex
function enHex(aDigit)
{
return("0123456789ABCDEF".substring(aDigit, aDigit+1))
}
// convert a hex digit into decimal
function deHex(aDigit)
{
return("0123456789ABCDEF".indexOf(aDigit))
}
// Convert a 24bit number to hex
function toHex(n)
{
return (enHex((0xf00000 & n) >> 20) +
enHex((0x0f0000 & n) >> 16) +
enHex((0x00f000 & n) >> 12) +
enHex((0x000f00 & n) >> 8) +
enHex((0x0000f0 & n) >> 4) +
enHex((0x00000f & n) >> 0))
}
// Convert a six character hex to decimal
function toDecimal(hexNum)
{
var tmp = ""+hexNum.toUpperCase()
while (tmp.length < 6) tmp = "0"+tmp
return ((deHex(tmp.substring(0,1)) << 20) +
(deHex(tmp.substring(1,2)) << 16) +
(deHex(tmp.substring(2,3)) << 12) +
(deHex(tmp.substring(3,4)) << 8) +
(deHex(tmp.substring(4,5)) << 4) +
(deHex(tmp.substring(5,6))))
}
///////////////////Shimmering Links/////////////////////
//global variables
var hoverColour
var numLinks;
var rate;
var numFadeLevels;
var bgR;
var bgG;
var bgB;
var currR;
var currG;
var currB;
var count;
var fadeOut;
var continuous;
var newColour;
var tID;
var redInterval;
var greenInterval;
var blueInterval;
function initLinks(mouseOverColour, numberOfLinks, fadeOutColour)
{
hoverColour = mouseOverColour;
numLinks = numberOfLinks;
rate = 1;
numFadeLevels = 30;
function initArray(theArray, length, val)
{
for(i=0;i<length;i++)
{
theArray[i] = val;
}
}
bgR = '0000' + fadeOutColour.substring(1,3)
bgG = '0000' + fadeOutColour.substring(3,5)
bgB = '0000' + fadeOutColour.substring(5,7)
currR = new Array(numLinks);
currG = new Array(numLinks);
currB = new Array(numLinks);
count = new Array(numLinks);
fadeOut = new Array(numLinks);
continuous = new Array(numLinks);
newColour = new Array(numLinks);
tID = new Array(numLinks);
redInterval = toDecimal(bgR) / numFadeLevels;
greenInterval = toDecimal(bgG) / numFadeLevels;
blueInterval = toDecimal(bgB) / numFadeLevels;
initArray(currR,numLinks,0);
initArray(currG,numLinks,0);
initArray(currB,numLinks,0);
initArray(count,numLinks,0);
initArray(fadeOut,numLinks,true);
initArray(continuous,numLinks,true);
}
function startFade(id)
{
if(fadeOut[id] == true)
{ /*move colour towards background colour (increment)*/
currR[id] += redInterval;
currG[id] += greenInterval;
currB[id] += blueInterval;
newColour[id] = '#' + (toHex(currR[id])).substring(4,6) + (toHex(currG[id])).substring(4,6) + (toHex(currB[id])).substring(4,6);
if(++count[id] == numFadeLevels)
{
fadeOut[id] = false;
}
}
else
{
currR[id] -= redInterval;
currG[id] -= greenInterval;
currB[id] -= blueInterval;
newColour[id] = '#' + (toHex(currR[id])).substring(4,6) + (toHex(currG[id])).substring(4,6) + (toHex(currB[id])).substring(4,6);
if(--count[id] == 0)
{
fadeOut[id] = true;
}
}
if(continuous[id] == true)
{
document.getElementById(id).style.color = newColour[id];
}
else
{
document.getElementById(id).style.color = hoverColour;
}
clearTimeout(tID[id]);
tID[id]=setTimeout('startFade(' + id + ')', rate);
}
function continueFade(id)
{
continuous[id] = true;
}
function stopFade(id)
{
continuous[id] = false;
}
function StartTimers()
{ //set up an initial set of timers to start the shimmering effect
for(id=0; id<numLinks; id++)
{
t=setTimeout('startFade(' + id + ')', id*100);
}
}
//format = initLinks('mouse-over colour', 'number of links', 'fade-out colour')
initLinks('#FF0000', 6, '#FFCC77');
//-->
</script>
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<script language="javascript" type="text/javascript">
<!--
setTimeout('StartTimers()', 1000); //initial 1 second delay to allow page to load and ensure smooth shimmering
//-->
</script>