/* Функция выделяет в рюкзакеуказаную ячейку */
 function mark (obj)
 {
 var re = /(\w+)\s(\marker)/;
 var str = document.getElementById(obj).className;
 document.getElementById(obj).className = re.test(str) ? str.replace(re, "$1") : str+" marker";
 }
 
 function hide (obj) { document.getElementById(obj).style.display="none"; return; }
 function show (obj) { document.getElementById(obj).style.display="block"; return; }
 
 /* горизонтальное меню */
 
var old;
var memold;
var subold;
if (document.layers) { window.captureEvents(Event.MOUSEDOWN); window.onmousedown=do_out; }
else { document.onmouseup=do_out;}

function show_layer(x)
{
	if(document.layers) document.layers[x].visibility="show";
	else { document.all[x].style.visibility="visible"; document.all[x].style.top = "38px";}
}

function hide_layer(x)
{
	if(document.layers)	document.layers[x].visibility="hide";
	else { document.all[x].style.visibility="hidden"; document.all[x].style.top = "-500px"; }	
}

function do_menu(x)
{
	if(!old) old=memold;
	if(old!=x) { show_layer(x); old=x; }
	else old="";
}

function do_check(x)
{
	if (!old) do_menu(x);
	if(old && old!=x)
	{
		hide_layer(old);
		show_layer(x);
		old=x;
	}
	do_submenu();
}

function do_out()
{
	if(old)
		hide_layer(old);
	memold=old; old="";
	do_submenu();
}

function do_submenu(x)
{
	if(subold)
	{
		hide_layer(subold);
		subold="";
	}
	if(x)
	{
		show_layer(x);
		subold=x;
	}
}