function systemLeaveItem(item) {
	if(systemCNHovered(item.className)) {
		item.className = item.className.replace("Hover", '');
	}
}
function systemHoverItem(item) {
	if(!systemCNHovered(item.className)) {
		item.className += "Hover";
	}
}

function systemCNHovered(className) {
	return (className.indexOf('Hover') != -1);
}

function systemShowHelp() {
	if(systemDoLoadHelp != null && systemDoLoadHelp) systemDoLoadHelp();
	systemShowNavigation();
	systemHideMenu();
	systemHideInfo();
	document.getElementById('buttonHelp').className = 'buttonFocus';
	document.getElementById('system_help').style.display = '';
	systemSetCookie('navigation', 'help');
}
function systemShowMenu() {
	if(systemDoLoadMenu != null && systemDoLoadMenu) systemDoLoadMenu();
	systemShowNavigation();
	systemHideHelp();
	systemHideInfo();
	document.getElementById('buttonMenu').className = 'buttonFocus';
	document.getElementById('system_menu').style.display = '';
	systemSetCookie('navigation', 'menu');
}
function systemShowInfo() {
	var v = systemGetCookie('navigation');
	systemShowNavigation();
	systemHideHelp();
	systemHideMenu();
	document.getElementById('system_info').style.display = '';
	systemSetCookie('navigation', v);
}
function systemHideHelp() {
	document.getElementById('buttonHelp').className = 'button';
	document.getElementById('system_help').style.display = 'none';
}
function systemHideMenu() {
	document.getElementById('buttonMenu').className = 'button';
	document.getElementById('system_menu').style.display = 'none';
}
function systemHideInfo() {
	document.getElementById('system_info').style.display = 'none';
}

systemDoLoadHelp = function() {
	var u = systemGetCookie('currenthelp');
//	alert(u);
//	alert(sAdminHelpDefault);
	if(u != null) {
		systemLoadHelp(u);
	} else {
		systemLoadHelp(sAdminHelpDefault);
	}
	systemDoLoadHelp = null;
}
systemDoLoadMenu = function() {
	systemLoadMenu();
	systemDoLoadMenu = undefined;
}

function systemRestoreNavigation() {
	var nav = systemGetCookie('navigation');
	switch(nav) {
		case 'menu': systemShowMenu(); break;
		case 'help': systemShowHelp(); break;
		case 'nonemenu': systemShowMenu(); systemHideNavigation(); break;
		case 'nonehelp': systemShowHelp(); systemHideNavigation(); break;
		default: systemShowMenu(); break;
	}
}
function systemShowNavigation() {
	if(systemNavigationVisible()) return;
	var t;
	if(null != (t = document.getElementById('system_head'))) t.style.left = '';
	if(null != (t = document.getElementById('system_content'))) t.style.left = '';
	if(null != (t = document.getElementById('system_sitepreview'))) t.style.left = '';
	if(null != (t = document.getElementById('system_menubar'))) t.style.left = '';
	if(null != (t = document.getElementById('system_navigation'))) t.style.display = '';
	if(null != (t = document.getElementById('system_button_menuminimizer'))) t.className = 'buttonMinimize';
	var curnav = systemGetCookie('navigation');
	if(curnav == null) curnav = '';
	else curnav = curnav.replace('none', '');
	systemSetCookie('navigation', curnav);
}
function systemHideNavigation() {
	if(!systemNavigationVisible()) return;
	var t;
	if(null != (t = document.getElementById('system_head'))) t.style.left = '13px';
	if(null != (t = document.getElementById('system_content'))) t.style.left = '13px';
	if(null != (t = document.getElementById('system_sitepreview'))) t.style.left = '13px';
	if(null != (t = document.getElementById('system_menubar'))) t.style.left = '0px';
	//if(null != (t = document.getElementById('system_navigation'))) {
	//	systemNavigationResize(t, 0);
	//}
	if(null != (t = document.getElementById('system_navigation'))) t.style.display = 'none';

	if(null != (t = document.getElementById('system_button_menuminimizer'))) t.className = 'buttonRestore';
	systemSetCookie('navigation', 'none'+systemGetCookie('navigation'));
}
function systemNavigationResize(nav, direction) {
	if (direction == 0) {
		alert(nav.innerWidth);
		if (nav.width > 13) {
			nav.width = nav.width - 1;
			systemNavigationResize(nav, direction);
		} 
	} else {
		if (nav.width < 200) {
			nav.width = nav.width + 1;
			systemNavigationResize(nav, direction);
		} 
	}
}
function systemNavigationVisible() {
	return (document.getElementById('system_button_menuminimizer').className == 'buttonMinimize');
}
function systemToggleNavigation() {
	if(systemNavigationVisible()) {
		systemHideNavigation();
	} else {
		systemShowNavigation();
	}
}