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- /************************************************************************/
- /* Rainbow Links Version 1.03 (2003.9.20) */
- /* Script updated by Dynamicdrive.com for IE6 */
- /* Copyright (C) 1999-2001 TAKANASHI Mizuki */
- /* takanasi@hamal.freemail.ne.jp */
- /*----------------------------------------------------------------------*/
- /* Read it somehow even if my English text is a little wrong! ;-) */
- /* */
- /* Usage: */
- /* Insert '<script src="rainbow.js"></script>' into the BODY section, */
- /* right after the BODY tag itself, before anything else. */
- /* You don't need to add "onMouseover" and "onMouseout" attributes!! */
- /* */
- /* If you'd like to add effect to other texts(not link texts), then */
- /* add 'onmouseover="doRainbow(this);"' and */
- /* 'onmouseout="stopRainbow();"' to the target tags. */
- /* */
- /* This Script works with IE4,Netscape6,Mozilla browser and above only, */
- /* but no error occurs on other browsers. */
- /************************************************************************/
-
-
- ////////////////////////////////////////////////////////////////////
- // Setting
-
- var rate = 20; // Increase amount(The degree of the transmutation)
-
-
- ////////////////////////////////////////////////////////////////////
- // Main routine
-
- 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;
- }
-
-
- //=============================================================================
- // doRainbow
- // This function begins to change a color.
- //=============================================================================
- function doRainbow(obj)
- {
- if (act == 0) {
- act = 1;
- if (obj)
- objActive = obj;
- else
- objActive = event.srcElement;
- clrOrg = objActive.style.color;
- TimerID = setInterval("ChangeColor()",100);
- }
- }
-
-
- //=============================================================================
- // stopRainbow
- // This function stops to change a color.
- //=============================================================================
- function stopRainbow()
- {
- if (act) {
- objActive.style.color = clrOrg;
- clearInterval(TimerID);
- act = 0;
- }
- }
-
-
- //=============================================================================
- // doRainbowAnchor
- // This function begins to change a color. (of a anchor, automatically)
- //=============================================================================
- 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);
- }
- }
- }
-
-
- //=============================================================================
- // stopRainbowAnchor
- // This function stops to change a color. (of a anchor, automatically)
- //=============================================================================
- function stopRainbowAnchor()
- {
- if (act) {
- if (objActive.tagName == 'A') {
- objActive.style.color = clrOrg;
- clearInterval(TimerID);
- act = 0;
- }
- }
- }
-
-
- //=============================================================================
- // Mozilla_doRainbowAnchor(for Netscape6 and Mozilla browser)
- // This function begins to change a color. (of a anchor, automatically)
- //=============================================================================
- 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);
- }
- }
- }
-
-
- //=============================================================================
- // Mozilla_stopRainbowAnchor(for Netscape6 and Mozilla browser)
- // This function stops to change a color. (of a anchor, automatically)
- //=============================================================================
- function Mozilla_stopRainbowAnchor(e)
- {
- if (act) {
- if (objActive.nodeName == 'A') {
- objActive.style.color = clrOrg;
- clearInterval(TimerID);
- act = 0;
- }
- }
- }
-
-
- //=============================================================================
- // Change Color
- // This function changes a color actually.
- //=============================================================================
- function ChangeColor()
- {
- objActive.style.color = makeColor();
- }
-
-
- //=============================================================================
- // makeColor
- // This function makes rainbow colors.
- //=============================================================================
- 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;
- }
-