function gen_req(method){
	new Ajax.Request('php/main.php',
	  {
	    method:'get',
		parameters: {func: method},
	    onSuccess: gen_resp,
	    onFailure: error
	  });
}

function gen_resp(response){
	var obj = eval('(' + response.responseText + ')');
	document.getElementById('left').innerHTML = obj.content;
	document.getElementById('right').innerHTML = obj.media;
	reinitialiseScrollPane();
}

function error(){
	alert('An error has occured, please try again later...');
}