function write_random_amazon_associate_image() {

	var image_src = "http://www.harnishdigital.com/images/amazon_associate/amazon";
	var image_link = "http://www.amazon.com/exec/obidos/redirect-home/harnishdigi01-20";
	var image_alt = "'Shop at my Amazon.com store and send my nephews to college!'";
	randum_number = (Math.floor(Math.random()*13))+1;
	output = "<a href="+image_link+" target=_blank>";
	output = output+"<img src="+image_src+randum_number+".gif width=125 height=125 border=0 alt="+image_alt+"></a>";
	
	document.write(output);
}