var summaryEndpointURI = "/blog/summary.do";

function getSummary(type, blogId) {
	var url = summaryEndpointURI;
	var params = "type=" + type + "&id=" + blogId;
	var myAjax = new Ajax.Updater({
			success: type + "Summary"
		},
		url,
		{
			method: "post",
			parameters: params
		});
}