增加鼠标超链接特效

&lt;script type='text/javascript'&gt;
//&lt;![CDATA[
var rate = 20;
if (document.getElementById)
window.onerror=new Function("return true")
var objActive;  // The object which event occured in
var act = 0;    // Flag during the action
var elmH = 0;   // Hue
var elmS = 128; // Saturation
var elmV = 255; // Value
var clrOrg;     // A color before the change
var TimerID;    // Timer ID
if (document.all) {
    document.onmouseover = doRainbowAnchor;
    document.onmouseout = stopRainbowAnchor;
}
else if (document.getElementById) {
    document.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
    document.onmouseover = Mozilla_doRainbowAnchor;
    document.onmouseout = Mozilla_stopRainbowAnchor;
}
function doRainbow(obj)
{
    if (act == 0) {
        act = 1;
        if (obj)
            objActive = obj;
        else
            objActive = event.srcElement;
        clrOrg = objActive.style.color;
        TimerID = setInterval("ChangeColor()",100);
    }
}


function stopRainbow()
{
    if (act) {
        objActive.style.color = clrOrg;
        clearInterval(TimerID);
        act = 0;
    }
}


function doRainbowAnchor()
{
    if (act == 0) {
        var obj = event.srcElement;
        while (obj.tagName != 'A' &amp;&amp; obj.tagName != 'BODY') {
            obj = obj.parentElement;
            if (obj.tagName == 'A' || obj.tagName == 'BODY')
                break;
        }
        if (obj.tagName == 'A' &amp;&amp; obj.href != '') {
            objActive = obj;
            act = 1;
            clrOrg = objActive.style.color;
            TimerID = setInterval("ChangeColor()",100);
        }
    }
}


function stopRainbowAnchor()
{
    if (act) {
        if (objActive.tagName == 'A') {
            objActive.style.color = clrOrg;
            clearInterval(TimerID);
            act = 0;
        }
    }
}


function Mozilla_doRainbowAnchor(e)
{
    if (act == 0) {
        obj = e.target;
        while (obj.nodeName != 'A' &amp;&amp; obj.nodeName != 'BODY') {
            obj = obj.parentNode;
            if (obj.nodeName == 'A' || obj.nodeName == 'BODY')
                break;
        }
        if (obj.nodeName == 'A' &amp;&amp; obj.href != '') {
            objActive = obj;
            act = 1;
            clrOrg = obj.style.color;
            TimerID = setInterval("ChangeColor()",100);
        }
    }
}


function Mozilla_stopRainbowAnchor(e)
{
    if (act) {
        if (objActive.nodeName == 'A') {
            objActive.style.color = clrOrg;
            clearInterval(TimerID);
            act = 0;
        }
    }
}


function ChangeColor()
{
    objActive.style.color = makeColor();
}


function makeColor()
{
    // Don't you think Color Gamut to look like Rainbow?
    // HSVtoRGB
    if (elmS == 0) {
        elmR = elmV;    elmG = elmV;    elmB = elmV;
    }
    else {
        t1 = elmV;
        t2 = (255 - elmS) * elmV / 255;
        t3 = elmH % 60;
        t3 = (t1 - t2) * t3 / 60;
        if (elmH &lt; 60) {
            elmR = t1;  elmB = t2;  elmG = t2 + t3;
        }
        else if (elmH &lt; 120) {
            elmG = t1;  elmB = t2;  elmR = t1 - t3;
        }
        else if (elmH &lt; 180) {
            elmG = t1;  elmR = t2;  elmB = t2 + t3;
        }
        else if (elmH &lt; 240) {
            elmB = t1;  elmR = t2;  elmG = t1 - t3;
        }
        else if (elmH &lt; 300) {
            elmB = t1;  elmG = t2;  elmR = t2 + t3;
        }
        else if (elmH &lt; 360) {
            elmR = t1;  elmG = t2;  elmB = t1 - t3;
        }
        else {
            elmR = 0;   elmG = 0;   elmB = 0;
        }
    }
    elmR = Math.floor(elmR).toString(16);
    elmG = Math.floor(elmG).toString(16);
    elmB = Math.floor(elmB).toString(16);
    if (elmR.length == 1)    elmR = "0" + elmR;
    if (elmG.length == 1)    elmG = "0" + elmG;
    if (elmB.length == 1)    elmB = "0" + elmB;
    elmH = elmH + rate;
    if (elmH &gt;= 360)
        elmH = 0;
    return '#' + elmR + elmG + elmB;
}
//]]&gt;
&lt;/script&gt;
&lt;a href="###"&gt;测试&lt;/a&gt;

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//<![CDATA[

var rate = 20;

if (document.getElementById)

window.onerror=new Function("return true")

var objActive; // The object which event occured in

var act = 0; // Flag during the action

var elmH = 0; // Hue

var elmS = 128; // Saturation

var elmV = 255; // Value

var clrOrg; // A color before the change

var TimerID; // Timer ID

if (document.all) {

document.onmouseover = doRainbowAnchor;

document.onmouseout = stopRainbowAnchor;

}

else if (document.getElementById) {

document.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);

document.onmouseover = Mozilla_doRainbowAnchor;

document.onmouseout = Mozilla_stopRainbowAnchor;

}

function doRainbow(obj)

{

if (act == 0) {

act = 1;

if (obj)

objActive = obj;

else

objActive = event.srcElement;

clrOrg = objActive.style.color;

TimerID = setInterval("ChangeColor()",100);

}

function stopRainbow()

{

if (act) {

objActive.style.color = clrOrg;

clearInterval(TimerID);

act = 0;

}

function doRainbowAnchor()

{

if (act == 0) {

var obj = event.srcElement;

while (obj.tagName != 'A' && obj.tagName != 'BODY') {

obj = obj.parentElement;

if (obj.tagName == 'A' || obj.tagName == 'BODY')

break;

}

if (obj.tagName == 'A' && obj.href != '') {

objActive = obj;

act = 1;

clrOrg = objActive.style.color;

TimerID = setInterval("ChangeColor()",100);

}

function stopRainbowAnchor()

{

if (act) {

if (objActive.tagName == 'A') {

objActive.style.color = clrOrg;

clearInterval(TimerID);

act = 0;

}

function Mozilla_doRainbowAnchor(e)

{

if (act == 0) {

obj = e.target;

while (obj.nodeName != 'A' && obj.nodeName != 'BODY') {

obj = obj.parentNode;

if (obj.nodeName == 'A' || obj.nodeName == 'BODY')

break;

}

if (obj.nodeName == 'A' && obj.href != '') {

objActive = obj;

act = 1;

clrOrg = obj.style.color;

TimerID = setInterval("ChangeColor()",100);

}

function Mozilla_stopRainbowAnchor(e)

{

if (act) {

if (objActive.nodeName == 'A') {

objActive.style.color = clrOrg;

clearInterval(TimerID);

act = 0;

}

function ChangeColor()

{

objActive.style.color = makeColor();

}

function makeColor()

{

// Don't you think Color Gamut to look like Rainbow?

// HSVtoRGB

if (elmS == 0) {

elmR = elmV; elmG = elmV; elmB = elmV;

}

else {

t1 = elmV;

t2 = (255 - elmS) * elmV / 255;

t3 = elmH % 60;

t3 = (t1 - t2) * t3 / 60;

if (elmH < 60) {

elmR = t1; elmB = t2; elmG = t2 + t3;

}

else if (elmH < 120) {

elmG = t1; elmB = t2; elmR = t1 - t3;

}

else if (elmH < 180) {

elmG = t1; elmR = t2; elmB = t2 + t3;

}

else if (elmH < 240) {

elmB = t1; elmR = t2; elmG = t1 - t3;

}

else if (elmH < 300) {

elmB = t1; elmG = t2; elmR = t2 + t3;

}

else if (elmH < 360) {

elmR = t1; elmG = t2; elmB = t1 - t3;

}

else {

elmR = 0; elmG = 0; elmB = 0;

}

elmR = Math.floor(elmR).toString(16);

elmG = Math.floor(elmG).toString(16);

elmB = Math.floor(elmB).toString(16);

if (elmR.length == 1) elmR = "0" + elmR;

if (elmG.length == 1) elmG = "0" + elmG;

if (elmB.length == 1) elmB = "0" + elmB;

elmH = elmH + rate;

if (elmH >= 360)

elmH = 0;

return '#' + elmR + elmG + elmB;

}

//]]>

</script>

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