function changeSection(id){
	var arrow=document.getElementById('section_arrow_'+id);
	var content=document.getElementById('section_content_'+id);
	var req = new Subsys_JsHttpRequest_Js();
	req.onreadystatechange = function(){
		if (req.readyState == 4){
			if(req.responseJS=='yes'){
				arrow.src='images/s_a_down.gif';
				content.style.display='block';
			}else{
				arrow.src='images/s_a_normal.gif';
				content.style.display='none';
			}
		}
	}
	req.open('GET', 'ajax.sections.php?event=changeSection&id='+id, true);
	req.send({});
}