var images = [["http://h9u57n4.artlog.com/advertisements/click/311", "Invisible Exports", "http://s3.amazonaws.com/artlog/advertisements/621/9bbe562b37_sidebar.gif", "311"], ["http://h9u57n4.artlog.com/advertisements/click/321", "DCKT", "http://s3.amazonaws.com/artlog/advertisements/641/07e04079d4_sidebar.gif", "321"], ["http://h9u57n4.artlog.com/advertisements/click/331", "Christina Ray", "http://s3.amazonaws.com/artlog/advertisements/661/e07ee3902d_sidebar.jpeg", "331"], ["http://h9u57n4.artlog.com/advertisements/click/341", "Mixed Greens", "http://s3.amazonaws.com/artlog/advertisements/681/b62b304cab_sidebar.gif", "341"], ["http://h9u57n4.artlog.com/advertisements/click/351", "Zurcher Studio", "http://s3.amazonaws.com/artlog/advertisements/701/625c1753c1_sidebar.gif", "351"], ["http://h9u57n4.artlog.com/advertisements/click/381", "PPOW", "http://s3.amazonaws.com/artlog/advertisements/761/75520568f4_sidebar.gif", "381"], ["http://h9u57n4.artlog.com/advertisements/click/391", "Jeff Bailey Gallery", "http://s3.amazonaws.com/artlog/advertisements/781/a3a1646926_sidebar.gif", "391"], ["http://h9u57n4.artlog.com/advertisements/click/401", "Collette Blanchard Gallery", "http://s3.amazonaws.com/artlog/advertisements/801/1e11a3b128_sidebar.gif", "401"]]
	var selected = Math.floor(Math.random()*(images.length)) 
	var advert_div = $("advertisement-link");
	var link_url = images[selected][0];
	var image_alt = images[selected][1];
	var image_src = images[selected][2];
	var advertisment_id = images[selected][3];
	advert_div.innerHTML = '<a href="'+ link_url + '" title="' + image_alt + '" target="_blank"><img src="'+ image_src + '" alt="' + image_alt + '" /></a>';	
	//<![CDATA[
	new Ajax.Updater({success:'advertisements',failure:'error'}, '/advertisements/impression/'+advertisment_id+'', {asynchronous:true, evalScripts:true})
	//]]>