让连接不停的变色

<SCRIPT language=Javascript src="fade.js"></SCRIPT>
演示 http://www.wooshow.com/dw/demo/ln/1.htm

fade.js代码

startColor = "#4D4D4D"; // 颜色可以该

endColor = "#ffffff"; // MouseOver link color

stepIn = 10; // delay when fading in

stepOut = 20; // delay when fading out
/*

** set to true or false; true will

** cause all links to fade automatically

***/

autoFade = true;
/*
** set to true or false; true will cause all CSS
** classes with "fade" in them to fade onmouseover
***/

sloppyClass = true;

/**

**** </config>

**************/

/*************

**** <install>

**

**

**** </install>

**************/
hexa = new makearray(16);

for(var i = 0; i < 10; i++)

hexa[i] = i;

hexa[10]="a"; hexa[11]="b"; hexa[12]="c";

hexa[13]="d"; hexa[14]="e"; hexa[15]="f";

document.onmouseover = domouseover;

document.onmouseout = domouseout;

startColor = dehexize(startColor.toLowerCase());

endColor = dehexize(endColor.toLowerCase());

var fadeId = new Array();

var timerID = 0;

var theElement,theTagName,theClassName,theUniqueID

function dehexize(Color){

var colorArr = new makearray(3);

for (i=1; i<7; i++){

for (j=0; j<16; j++){

if (Color.charAt(i) == hexa[j]){

if (i%2 !=0)

colorArr[Math.floor((i-1)/2)]=eval(j)*16;

else

colorArr[Math.floor((i-1)/2)]+=eval(j);

}

}

}

return colorArr;

}

function domouseover() {

if(document.all) {

clearTimeout(timerID);

theElement = event.srcElement;

theTagName = theElement.tagName;

theClassName = theElement.className;

theUniqueID = theElement.uniqueID;

if ((theTagName == "A" && autoFade) || theClassName == "fade" || (sloppyClass && theClassName.indexOf("fade") != -1)) {

//alert(theElement);

fade(startColor,endColor,theUniqueID,stepIn);

timerID = setTimeout('pulsedown()',500);

}

}

}

function pulseup() {

if(document.all) {

clearTimeout(timerID);

if ((theTagName == "A" && autoFade) || theClassName == "fade" || (sloppyClass && theClassName.indexOf("fade") != -1)) {

//alert(theElement);

fade(startColor,endColor,theUniqueID,stepIn);

timerID = setTimeout('pulsedown(theElement)',500);

}

}

}

function pulsedown(theElement) {

if (document.all) {

clearTimeout(timerID);

if ((theTagName == "A" && autoFade) || theClassName == "fade" || (sloppyClass && theClassName.indexOf("fade") != -1)) {

//alert(theElement);

fade(endColor,startColor,theUniqueID,stepOut);

timerID = setTimeout('pulseup()',500);

}

}

}

function domouseout() {

if (document.all) {

clearTimeout(timerID);

var srcElement = event.srcElement;

if ((srcElement.tagName == "A" && autoFade) || srcElement.className == "fade" || (sloppyClass && srcElement.className.indexOf("fade") != -1))

fade(endColor,startColor,srcElement.uniqueID,stepOut);

}

}

function makearray(n) {

this.length = n;

for(var i = 1; i <= n; i++)

this[i] = 0;

return this;

}

function hex(i) {

if (i < 0)

return "00";

else if (i > 255)

return "ff";

else

return "" + hexa[Math.floor(i/16)] + hexa[i%16];}

function setColor(r, g, b, element) {

var hr = hex(r); var hg = hex(g); var hb = hex(b);

element.style.color = "#"+hr+hg+hb;

}

function fade(s,e, element,step){

var sr = s[0]; var sg = s[1]; var sb = s[2];

var er = e[0]; var eg = e[1]; var eb = e[2];

if (fadeId[0] != null && fade[0] != element){

setColor(sr,sg,sb,eval(fadeId[0]));

var i = 1;

while(i < fadeId.length){

clearTimeout(fadeId[i]);

i++;

}

}

for(var i = 0; i <= step; i++) {

fadeId[i+1] = setTimeout("setColor(Math.floor(" +sr+ " *(( " +step+ " - " +i+ " )/ " +step+ " ) + " +er+ " * (" +i+ "/" +

step+ ")),Math.floor(" +sg+ " * (( " +step+ " - " +i+ " )/ " +step+ " ) + " +eg+ " * (" +i+ "/" +step+

")),Math.floor(" +sb+ " * ((" +step+ "-" +i+ ")/" +step+ ") + " +eb+ " * (" +i+ "/" +step+ ")),"+element+");",i*step);

}

fadeId[0] = element;

}