function seltab(box, head, id_max, selected) {
	
	//var no_tab=6;
	//alert(no_tab);
	if (! document.getElementById) return;
		//alert("box6 : "+document.getElementById(box6));
	for (i = 1; i <= 5; i++) {
		//alert("box6 : "+document.getElementById(box6));
		//alert("turn : "+i);
		//alert("box"+i+" : "+document.getElementById(box + i));
		if (! document.getElementById(box + i)) {
			//alert("skip");
			continue;
		}
		if (i == selected) {
			//alert("#"+i+" open");
			document.getElementById(box + i).style.display = "block";
			document.getElementById(head + i).className = "open";
		} else {
			//alert("#"+i+" close");
			document.getElementById(box + i).style.display = "none";
			document.getElementById(head + i).className = "close";
		}
		//alert("box6 : "+document.getElementById(box6));
	}
}