var images = [["http://artlog.com/advertisements/click/271", "Arlo/Artists", "http://s3.amazonaws.com/artlog/advertisements/541/8dd4659fe0_sidebar.jpg", "271"], ["http://artlog.com/advertisements/click/301", "Jen Bekman Gallery", "http://s3.amazonaws.com/artlog/advertisements/601/a726c6b54c_sidebar.gif", "301"], ["http://artlog.com/advertisements/click/311", "Invisible Exports", "http://s3.amazonaws.com/artlog/advertisements/621/58f7ecf031_sidebar.gif", "311"], ["http://artlog.com/advertisements/click/321", "DCKT", "http://s3.amazonaws.com/artlog/advertisements/641/7134905cde_sidebar.gif", "321"], ["http://artlog.com/advertisements/click/331", "Christina Ray", "http://s3.amazonaws.com/artlog/advertisements/661/d144481b1d_sidebar.jpeg", "331"], ["http://artlog.com/advertisements/click/341", "Mixed Greens", "http://s3.amazonaws.com/artlog/advertisements/681/6de94d0870_sidebar.gif", "341"], ["http://artlog.com/advertisements/click/351", "Zurcher Studio", "http://s3.amazonaws.com/artlog/advertisements/701/2738d4ad16_sidebar.gif", "351"], ["http://artlog.com/advertisements/click/381", "PPOW", "http://s3.amazonaws.com/artlog/advertisements/761/89a15f8137_sidebar.gif", "381"], ["http://artlog.com/advertisements/click/391", "Jeff Bailey Gallery", "http://s3.amazonaws.com/artlog/advertisements/781/6e7ddaed35_sidebar.gif", "391"], ["http://artlog.com/advertisements/click/401", "Collette Blanchard Gallery", "http://s3.amazonaws.com/artlog/advertisements/801/41a49019d8_sidebar.gif", "401"], ["http://artlog.com/advertisements/click/411", "Aperture", "http://s3.amazonaws.com/artlog/advertisements/1001/6f95b5ea13_sidebar.jpeg", "411"], ["http://artlog.com/advertisements/click/421", "Bose Pacia", "http://s3.amazonaws.com/artlog/advertisements/1041/d5796ea7ba_sidebar.jpeg", "421"], ["http://artlog.com/advertisements/click/431", "Like the Spice", "http://s3.amazonaws.com/artlog/advertisements/1081/509a3be6de_sidebar.jpg", "431"], ["http://artlog.com/advertisements/click/441", "bitforms", "http://s3.amazonaws.com/artlog/advertisements/1121/beaceaf5eb_sidebar.jpg", "441"], ["http://artlog.com/advertisements/click/451", "Benrimon", "http://s3.amazonaws.com/artlog/advertisements/1161/b07d9145a2_sidebar.jpeg", "451"], ["http://artlog.com/advertisements/click/461", "Rachel Uffner", "http://s3.amazonaws.com/artlog/advertisements/1201/51f51d7324_sidebar.jpeg", "461"], ["http://artlog.com/advertisements/click/471", "Bryce Wolkowitz", "http://s3.amazonaws.com/artlog/advertisements/1241/1d8a549b62_sidebar.jpeg", "471"], ["http://artlog.com/advertisements/click/481", "Mary Ryan Gallery", "http://s3.amazonaws.com/artlog/advertisements/1301/78160a78a4_sidebar.jpeg", "481"]]
	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})
	//]]>