function windowOpen(_url, _target, _width, _height) {
	var _left = Math.round((window.screen.availWidth - _width) / 2);
	var _top = Math.round((window.screen.availHeight - _height) / 2);
	window.open(_url, _target, "scrollbars=yes, resizable=yes, width=" + _width + ", height=" + _height + ", left=" + _left + ", top=" + _top);
	return false;
}

function flashWindowOpen(_url, _target, _width, _height) {
	var _left = Math.round((window.screen.availWidth - _width) / 2);
	var _top = Math.round((window.screen.availHeight - _height) / 2);
	window.open(_url, _target, "scrollbars=yes, resizable=yes, width=" + _width + ", height=" + _height + ", left=" + _left + ", top=" + _top);
}

function setFocus(_id) {
	document.getElementById(_id).focus();
}

function doAction(_form_id, _action_id, _action_value, _item_id, _item_value) {
	var _form = document.getElementById(_form_id);
	var _action = document.getElementById(_action_id);
	_action.value = _action_value;
	
	if (_item_id != null) {
		var _item = document.getElementById(_item_id);
		_item.value = _item_value;
	}
	
	_form.submit();
	return false;
}

function confirmAction(_form_id, _action_id, _action_value, _item_id, _item_value) {
	if (!window.confirm("Are you sure?"))
		return false;
	
	var _form = document.getElementById(_form_id);
	var _action = document.getElementById(_action_id);
	_action.value = _action_value;
	
	if (_item_id != null) {
		var _item = document.getElementById(_item_id);
		_item.value = _item_value;
	}
	
	_form.submit();
	return false;
}