text effects fade javascript

este codigo javascript, aplica un efecto de degradee a las letras de un cierto texto que nosotros le indiquemos.

Código Javascript


<html><title>text effects fade javascript</title>
<head>
<script type="text/javascript">
/* Fading Text
copyright Mike McGrath (website.lineone.net/~mike_mcgrath
Add more shock to your site, visit www.DHTMLShock.com
*/
var loop = true;    // Palanca on/off
var xpos = "20";    // Distancia desde la izquierda
var ypos = "30";    // Distancia desde arriba
var wide = "395";   // Ancho del layer 
var rate = "250";   // Cambia la velocidad
var tnum = "1";
var t = new Array();  
t[1] = ".....Bienvenido a Gamarod.com.ar .....";
t[2] = ".... Rutinas JavaScript Gratuitas ....";
t[3] = "......      en Castellano          ...!";
var cnum = "1";
var c = new Array();
c[1] = "black";
c[2] = "gray";
c[3] = "silver";
c[4] = "whitesmoke";
c[5] = "white";
c[6] = "white";
c[7] = "white";
c[8] = "whitesmoke";
c[9] = "silver";
c[10] = "gray";
c[11] = "black";
c[12] = "black";

if(document.layers)document.write("<layer name='hi' Left='"+xpos+"' Top='"+ypos+"' Width='"+wide+"'></layer>");
if(document.all)document.write("<div id='hi' style='position:absolute;left:"+xpos+";top:"+ypos+";width:"+wide+"'>");
function glow()
{
	if(document.layers)
	{
		if(tnum < t.length)
		{
			if(cnum < c.length-1)
			{
				document.layers["hi"].document.write("<font size=5 color='"+c[cnum]+"'>"+t[tnum]+"</font>");
				document.layers["hi"].document.close();
				cnum++;
			}
			else
			{	
        cnum = 1;
			  tnum++;
        if(loop)
        {
          if(tnum == t.length) tnum = 1;
        }
			}
  		setTimeout("glow()",rate);
		}
    else
    {
      document.layers["hi"].document.write("");
	    document.layers["hi"].document.close();
    }
	}
  if(document.all)
	{
	  if(tnum < t.length)
		{
			if(cnum < c.length-1)
			{
				document.all("hi").innerHTML = "<font size=5 color='"+c[cnum]+"'>"+t[tnum]+"</font>";
				cnum ++;
			}	
			else
			{
			  cnum = 1;
        tnum ++;
        if(loop)
        {
          if(tnum == t.length) tnum = 1;
        }
			}
	    setTimeout("glow()",rate);
		}
    else document.all("hi").innerHTML = "";
	}
}
</SCRIPT>
</head>
<BODY onLoad='glow()'>
<br><br><br>
</body>
</html>
Ver ejemplo Javascript en funcionamiento