function show_preview(template_name,newsletter){
	var head = document.getElementsByTagName('head')[0];
	var link = document.getElementById("presenttemplate");
	head.removeChild(link);

	mycss = document.createElement("link");
   	mycss.id="presenttemplate";
   	mycss.type="text/css";
   	mycss.rel="stylesheet";
   	mycss.title="preview";   
   	mycss.href= "templates/"+template_name+"/css/"+template_name+".css";
   	document.getElementsByTagName("head")[0].appendChild(mycss);
	
	
   		$.ajax({
		type: "POST",
		url: "archive_preview.php",
		data: "newsletter="+newsletter+"&template="+template_name,
		cache: false,
		success: function(html){
		document.getElementById('right-column').innerHTML=html;	
		}
	});
	
	
};