// JavaScript Document
var rate = 20;  
var obj;        
var act = 0;    
var elmH = 0;   
var elmS = 128; 
var elmV = 255; 
var clrOrg;   
var TimerID;  


if (navigator.appName.indexOf("Microsoft",0) != -1 && parseInt(navigator.appVersion) >= 4) {
    Browser = true;
} else {
    Browser = false;
}

if (Browser) {
	document.onmouseover = doRainbowAction;
    document.onmouseout = stopRainbowAction;
}


//function doRainbow()
//{
//    if (Browser && act != 1) {
//        act = 1;
//        obj = event.srcElement;
//        clrOrg = obj.style.color;
//        TimerID = setInterval("ChangeColor()",100);
//    }
//}
//
//
//
//function stopRainbow()
//{
//    if (Browser && act != 0) {
//        obj.style.color = clrOrg;
//        clearInterval(TimerID);
//        act = 0;
//    }
//}

function doRainbowAction()
{
    if (Browser && act != 1) {
        obj = event.srcElement;
		if ((obj.tagName == 'SPAN' || obj.tagName == 'INPUT') && obj.rainbow =='yes') {
            act = 1;
            clrOrg = obj.style.color;
            TimerID = setInterval("ChangeColor()",100);
        }
    }
}



function stopRainbowAction()
{
    if (Browser && act != 0) {
        if (obj.tagName == 'SPAN' || (obj.tagName == 'INPUT' && obj.type =='button')) {
            obj.style.color = clrOrg;
            clearInterval(TimerID);
            act = 0;
        }
    }
}


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



function makeColor()
{
  
    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);
    elmG = Math.floor(elmG);
    elmB = Math.floor(elmB);

    clrRGB = '#' + elmR.toString(16) + elmG.toString(16) + elmB.toString(16);

    elmH = elmH + rate;
    if (elmH >= 360)
        elmH = 0;

    return clrRGB;
}