// navigation javascript file

var currentMenu = "menuStatus";
var navTimeout = 0;

function resetTimeout() {
	if (navTimeout!=0) {
	  clearTimeout(navTimeout);
		navTimeout = setTimeout("changeMenu('menuStatus');", 2000);
	}
}

function changeMenu(menuName) {
  
  if (navTimeout!=0) {
  	clearTimeout(navTimeout);
	}

  if (currentMenu!='') {
		theMenu = document.getElementById(currentMenu);
		if (theMenu) {  
			theMenu.style.visibility = "hidden";
		} 
	}

  theMenu = document.getElementById(menuName);
	if (theMenu) {  
	  theMenu.style.visibility = "visible"; 
	  theMenu.style.display = "block"; 
	  theMenu.style.zIndex=500;
		currentMenu = menuName;
	} 
	
	if (currentMenu!="menuStatus") {
	  navTimeout = setTimeout("changeMenu('menuStatus');", 5000);
	}
}

function _search() {
  if (document.SearchForm.searchText.value == "") {
	  alert("Please enter something to search for.");
	} else {
	   document.SearchForm.submit();
	}
}