function imgSw(thumbArg, imgArg, num){
	if(!document.getElementById) return;
	for(i=1; i<7; i++){
		if (!document.getElementById(imgArg + 0 + i)) continue;
		if(i == num){
			document.getElementById(thumbArg + 0 + i).src = "img/thumb0" + i + "_show.gif";
			document.getElementById(imgArg + 0 + i).style.display = "";
		}else{
			document.getElementById(thumbArg + 0 + i).src = "img/thumb0" + i + "_hide.gif";
			document.getElementById(imgArg + 0 + i).style.display = "none";
		}
	}
}