function show_menu(num, bit){
	//if (document.getElementById("submenu"+num).style.display == "block"){
	//	document.getElementById("submenu"+num).style.display = "none";
	//}
	//else{
	//	document.getElementById("submenu"+num).style.display = "block";
	//}
	if ( bit==0 )
		document.getElementById("submenu"+num).style.display = "none";
	else
		document.getElementById("submenu"+num).style.display = "block";
}