var isNS = (navigator.appName == "Netscape");
var menusVisible = new Array();
var gTimer = null;
function showMenu(menu, fromlink)
{
	//show desired menu and hide all the previously opened sub menus
	//if menu was already opened, it will be closed
	if ( menu == null ) return;
	//only netscape 4.x needs href link to open layers
	if ( fromlink && !(isNS && document.getElementById == null) ) return;
	var keephidden = false;
	if (inList(menusVisible, menu)) keephidden = true;
	hideFromLevel(getLevel(menu));
	if ( keephidden ) return;
	if( isNS ) {
		if ( document.getElementById ) {
			eval("document.getElementById('" + menu + "').style.visibility = 'visible';");
		}
		else {
			eval("document.layers[\"" + menu + "\"].visibility = 'show';");
		}
	}
	else {
		document.all[menu].style.visibility = "visible";
	}
	menusVisible[menusVisible.length] = menu;
	if ( gTimer ) clearTimeout(gTimer);
	gTimer = setTimeout("timeExpired()", gTimeout);
}
function hideMenu(menu)
{
	//hide a particular menu
	if ( menu == null ) return;
	if(isNS) {
		if ( document.getElementById )
			eval("document.getElementById('" + menu + "').style.visibility = 'hidden';");
		else
			eval("document.layers[\"" + menu + "\"].visibility = 'hidden';");
	}
	else {
		document.all[menu].style.visibility = 'hidden';
	}
	if ( menusVisible.length > 0 ) menusVisible.length--;
}
function timeExpired()
{
	hideFromLevel(0);
	gTimer = null;
}
function hideFromLevel(level)
{
	//hide submenus from certain level to all way down
	for ( var i = menusVisible.length - 1; i >= 0; i-- ) {
		if ( getLevel(menusVisible[i]) < level ) break;
		hideMenu(menusVisible[i]);
	}
}
function getLevel(menu)
{
	// get level from menu name (names are formatted as "namexlevel")
	if ( menu == null ) return 0;
	for ( var i = menu.length - 1; i >= 0; i-- ) {
		if ( menu.charAt(i) == "x" ) {
			return parseInt(menu.substring(i + 1, menu.length));
		}
	}
	return 0;
}
function highlight(menu, color)
{	
	//mark any table cell with desired color (highlight effect)
	if ( menu == null ) return;
	if ( document.all ) {
		if ( document.all[menu] == null ) return;
		var col = ".style.background='" + color + "'";
		eval(menu + col);
	}
	else {
		if(document.getElementById) {
			if ( document.getElementById(menu) == null ) return;
			document.getElementById(menu).style.backgroundColor="'" + color + "'";
		}
	}
}
function inList(strlist, item)
{
	// returns true if item is in strlist
	for ( var i = 0; i < strlist.length; i++ ) {
		if ( strlist[i] == item ) return true;
	}
	return false;
}
function openDoc(doc, template)
{
	if ( template != null && template != "" ) document.location.href = template + "?OpenDocument&cid=" + doc;
	else document.location.href = doc + "?OpenDocument&cid=" + doc;
}