function showNews()
{
	var url="script/shownews.php"
	var pars = "?sid=" + Math.random();
	
	var ajaxRequest = new Ajax.Request(url, {
		method:       'get', 
		parameters:   pars, 
		asynchronous: true,
		onComplete:   showResponse
	});
}

function showResponse(xmlHttpRequest, responseHeader)
{
	var newsHTML = xmlHttpRequest.responseText;
	$("news").innerHTML = newsHTML;
}