function $toggle(id, bShow) {

	var obj = document.getElementById(id);
	if(!obj) return;

	if(bShow != undefined){
		if(bShow){
			bStyle = 'block';
		}else{
			bStyle = 'none';
		}
	}else{
//		alert(obj.style.display);
		if(obj.style.display != 'none'){
			bStyle = 'none';
		}else{
			bStyle = 'block';
		}
	}

	obj.style.display = bStyle;

}