Random color that can be stopped

Example

SEE EXAMPLE

Source code

<script language = "JavaScript">
<!-- Begin hiding here --

//**************************************************************************
//* this script by Jason Schanker (jcheetah@orion.webspan.net) *
// * comes from *
// * "http://www.webspan.net/~herbs/jcheetah/web_design/javascript/bgcolor_changer.html"*
// * You may copy this source freely if credit is given to the author *
//**************************************************************************


function color_changer(){

var now = new Date();

var seconds = now.getSeconds();

if(seconds == 0 || seconds == 7 || seconds == 14 || seconds == 21 || seconds == 28 || seconds == 35 || seconds == 42 || seconds == 49 || seconds == 56) document.bgColor = "red";

if(seconds == 1 || seconds == 8 || seconds == 15 || seconds == 22 || seconds == 29 || seconds == 36 || seconds == 43 || seconds == 50 || seconds == 57) document.bgColor = "orange";

if(seconds == 2 || seconds == 9 || seconds == 16 || seconds == 23 || seconds == 30 || seconds == 37 || seconds == 44 || seconds == 51 || seconds == 58) document.bgColor = "yellow";

if(seconds == 3 || seconds == 10 || seconds == 17 || seconds == 24 || seconds == 31 || seconds == 38 || seconds == 45 || seconds == 52 || seconds == 59) document.bgColor = "green";

if(seconds == 4 || seconds == 11 || seconds == 18 || seconds == 25 || seconds == 32 || seconds == 39 || seconds == 46 || seconds == 53 || seconds == 60) document.bgColor = "blue";

if(seconds == 5 || seconds == 12 || seconds == 19 || seconds == 26 || seconds == 33 || seconds == 40 || seconds == 47 || seconds == 54) document.bgColor = "indigo";

if(seconds == 6 || seconds == 13 || seconds == 20 || seconds == 27 || seconds == 34 || seconds == 41 || seconds == 48 || seconds == 55) document.bgColor = "purple";

setTimeout("color_changer()", 1000);

}

// -- End hiding here -->
</script>
<h1><center>Welcome To The Twilight Zone</h1></center>
<form name = control>
<input name = "on_off" type = "button" value = "On" onClick = "color_changer()">
<input type = "button" value = "Off" onClick = "history.go(0)">
</form>