FondoCambia
<SCRIPT LANGUAGE="JavaScript"> 
<!-- Start of JavaScript code -------- 
// 
// Description: Randomly change background color every 5 seconds 
// NewcWare 1997 
// Author: Scott Newcomer 3/1997 
// Email: nuke@bright.net 
// 
function setbackground() 
{ 
    window.setTimeout( "setbackground()", 3000); // 5000 milliseconds delay 
    var index = Math.round(Math.random() * 9); 
    var ColorValue = "FFFFFF"; // default color - white (index = 0) 
  
    if(index == 1) 
        ColorValue = "FFCCCC"; //peach 
    if(index == 2) 
        ColorValue = "CCAFFF"; //violet 
    if(index == 3) 
        ColorValue = "A6BEFF"; //lt blue 
    if(index == 4) 
        ColorValue = "99FFFF"; //cyan 
    if(index == 5) 
        ColorValue = "D5CCBB"; //tan 
    if(index == 6) 
        ColorValue = "99FF99"; //lt green 
    if(index == 7) 
        ColorValue = "FFFF99"; //lt yellow 
    if(index == 8 ) 
        ColorValue = "FFCC99"; //lt orange 
    if(index == 9) 
        ColorValue = "CCCCCC"; //lt grey 
    document.bgColor=ColorValue; 
} 
// -- End of JavaScript code -------------- --> 
</SCRIPT>