Foros del web, para los que viven de bits

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theImages[0] = '/images/headerimage1.jpg'
theImages[1] = '/images/headerimage2.jpg'
theImages[2] = '/images/headerimage3.jpg'
theImages[3] = '/images/headerimage4.jpg'
var j = 0
var p = theImages.length;
var preBuffer = new Array()
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preBuffer[i] = new Image()
preBuffer[i].src = theImages[i]
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var whichImage = Math.round(Math.random()*(p-1));
function showImage(){
document.write('<img src="'+theImages[whichImage]+'" alt="header image">');
}
</script>

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<script language="JavaScript" type="text/javascript">showImage()</script>