// Generate a random number
var axel = Math.random() + "";
var ord = axel * 1000000000000000000;

// Function to 'switch' images.
function get_ad(w,h,p,g) {
	if (typeof ad_page != "undefined") {
		if (ad_page != null) {p = ad_page;}
	}
	if (p == null) {p = ''} else {p = '&p='+p}
	if (g == null) {g = ''} else {g = '&g='+g}
	document.write('<script language="JavaScript" src="http://'+url+'/perl/ads/select.pl?s='+s+'&w='+w+'&h='+h+p+g+'&r='+ord+'&j=1"></script>')
}

function get_tower_ad(p,g) {
	if (Math.random() >= 0.5) {
		get_ad(120,600,p,g)
	} else {
		get_ad(160,600,p,g)
	}
}