//simplified show/hide function

function toggle_display(obj_id){
	if (document.getElementById){
		var obj = document.getElementById(obj_id);
	if (obj.style.display == '' || obj.style.display == 'none'){
		var state = 'block';
	} else {
		var state = 'none';
	}
		obj.style.display = state;
		var obj2 = document.getElementById('sendButton');
		var state2 = 'none';
		obj2.style.display = state2;
	}
}