#link hover animation

Tutorial de Bombastic Design.

Esse efeito é aquele que quando passa o mouse, o link fica passando as cores do arco-iris, deste jeito.

É bem simples, basta colar este código antes de </head> : 

<script type='text/javascript'> //<![CDATA[ var rate = 50; 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>

Você pode mudar a velocidade mudando o número 50  do "var rate = 50;"(Quanto maior o número, mais rápido será).

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