function load_statements(st_id) {
	var st = $('st_' + st_id);
	var expcol = $('expcol_' + st_id);
	if (!st)
		return;
	if (st.getProperty('loaded') == "1") {
		
		if (st.getProperty('visible') == "1") {
			st.setProperty('visible', "0");
			st.setStyle('display', 'none');
			expcol.innerHTML = "[+]";
		}
		else {
			st.setStyle('display', 'block');
			st.setProperty('visible', "1");
			expcol.innerHTML = "[–]";
		}		
		return;
	}

	var myXhr = new XHR({method: 'get', onSuccess: function() {
					//alert(myXhr.response);
					var r = myXhr.response;
					if (r && r.text) {
						//alert(r.text);
						if ($('blurb')) {
							//$('blurb').destroy();
							$('blurb').parentNode.removeChild($('blurb'));
							$('topics').setStyle('width', '100%');
							$('topics').setStyle('float', 'none');
						}
						if (st) {
							st.innerHTML  = r.text;
							st.setProperty('loaded', "1");
							st.setProperty('visible', "1");
							expcol.innerHTML = "[–]";
						}
					}
				} // end onSuccess
			});
	myXhr.send('educational_standards_statements', "sid=" + st_id);
}

function load_statement_atoms(st_id) {
	//var st = $('st_' + st_id);
	var expcol = $('colexp_at_' + st_id);
	if (!expcol)
		return;
	if (expcol.getProperty('loaded') == "1") {
		var at_container = $('atoms_for_st_' + st_id);
		if (expcol.getProperty('visible') == "1") {
			expcol.setProperty('visible', "0");
			at_container.setStyle('display', 'none');
			expcol.innerHTML = 'show atoms »';
		}
		else {
			at_container.setStyle('display', 'block');
			expcol.setProperty('visible', "1");
			expcol.innerHTML = 'hide atoms «';
		}		
		return;
	}

	var myXhr = new XHR({method: 'get', onSuccess: function() {
					//alert(myXhr.response);
					var r = myXhr.response;
					if (r && r.text) {
						//alert(r.text);
						$('atoms_for_st_' + st_id).innerHTML = r.text;
						expcol.setProperty('loaded', "1");
						expcol.setProperty('visible', "1");
						expcol.innerHTML = 'hide atoms «';
					}
				} // end onSuccess
			});
	myXhr.send('educational_standards_statements_atoms', "sid=" + st_id);
}