var numGags = 149
var numImages = 11

function ranValue (max) {
    return Math.floor (Math.random() * max + 1);
}

function writeRandomBanner ()	{
	var sText;

	var aNum = ranValue (numGags);		// Select a random gag line
	sText = '<a href="http://www.crainium.net/"><img border="0" src="http://crainium.net/images/gagLine' + aNum.toString() + '.gif" alt="quip #' + aNum.toString() + '" /></a>';
	
	var bNum = ranValue (numImages);	// Select a random skeleton image
	sText += '&nbsp;<a href="http://www.crainium.net/"><img border="0" src="http://crainium.net/images/SingingSkeleton_' + bNum.toString() + '.gif" alt="skeleton #' + bNum.toString() + '" /></a>';
	document.getElementById('banner').innerHTML = sText;
}