//----------------------------------------------------------
// Show/Hide element
//----------------------------------------------------------
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;

}

function $toggleAll(id_prefix, begin, end){
	var show = 'block';
	var i;
	for(i=begin; i<=end; i++){
		var obj = document.getElementById(id_prefix + i);
		if(!obj) continue;
		if(obj.style.display != 'none'){
			show = 'none';
			break;
		}
	}
	for(i=begin; i<=end; i++){
		var obj = document.getElementById(id_prefix + i);
		if(!obj) continue;
		obj.style.display = show;
	}
}