Java Script Practica 10

Crear una nueva página web
Insertar dentro de las etiquetas < head > < head >    el siguiente codigó
< script >
var TimeToFade = 1000.0;

function fade(eid)
{
var element = document.getElementById(eid);
if(element == null)
return;
if(element.FadeState == null)
{
if(element.style.opacity == null || element.style.opacity == ''  || element.style.opacity == '1')
element.FadeState = 2;
else
element.FadeState = -2;
}
if(element.FadeState == 1 || element.FadeState == -1)
{
element.FadeState = element.FadeState == 1 ? -1 : 1;
element.FadeTimeLeft = TimeToFade - element.FadeTimeLeft;
}
else
{
element.FadeState = element.FadeState == 2 ? -1 : 1;
element.FadeTimeLeft = TimeToFade;
setTimeout("animateFade(" + new Date().getTime() + ",'" + eid + "')", 33);
}
}

function animateFade(lastTick, eid)
{
var curTick = new Date().getTime();
var elapsedTicks = curTick - lastTick;
var element = document.getElementById(eid);
if(element.FadeTimeLeft <= elapsedTicks)
{
element.style.opacity = element.FadeState == 1 ? '1' : '0';
element.style.filter = 'alpha(opacity = ' + (element.FadeState == 1 ? '100' : '0') + ')';
element.FadeState = element.FadeState == 1 ? 2 : -2;
return;
}
element.FadeTimeLeft -= elapsedTicks;
var newOpVal = element.FadeTimeLeft/TimeToFade;
if(element.FadeState == 1)
newOpVal = 1 - newOpVal;
element.style.opacity = newOpVal;
element.style.filter = 'alpha(opacity = ' + (newOpVal*100) + ')';
setTimeout("animateFade(" + curTick + ",'" + eid + "')", 33);
}
< /script >



dentro de las etiquetas  < body >    < /body >  implementar el siguiente texto

< div id="fadeBlock" style="background-color:Lime;width:250px;


height:65px;text-align:center;" >

< br / >

I'm Some Text

< /div >

< br / >

< br / >

< input type="button" onclick="fade('fadeBlock');" value="Go" / >