var visible={};

function expand(x) {
	if (visible[x]) {
		if (visible[x] == 1) {
			$('#expandable_'+x+'_link span').html('show');
			visible[x] = 0;
		}
		else {
			$('#expandable_'+x+'_link span').html('hide');		
			visible[x] = 1;
		}
	} else {
		$('#expandable_'+x+'_link span').html('hide');		
		visible[x] = 1;
	}
	
	
	$('#expandable_'+x).toggle();
}