function closeNavMenu(navName){
		for (var i = 0; i < navs.length; i++) {
			var currNavName = navs[i];			
			var navElement = document.getElementById("nav_" + currNavName);			
			var html_code = ("nav_" + currNavName + "_title");
			if (currNavName == navName) {
				eval("navElement.innerHTML =" + html_code + ";");
				break;
			}
		}	
	}
	
	function openNavMenu(navName){
		for (var i = 0; i < navs.length; i++) {
			var currNavName = navs[i];			
			var navElement = document.getElementById("nav_" + currNavName);			
			var html_code_menu = ("nav_" + currNavName + "_menu");
			var html_code_title = ("nav_" + currNavName + "_title");			
			if (currNavName == navName) {
				eval("navElement.innerHTML =" + html_code_menu + ";");
			} else {
				eval("navElement.innerHTML =" + html_code_title + ";");
			}
		}
	}		

	function openUrlNavMenu(navName, url){
		for (var i = 0; i < navs.length; i++) {
			var currNavName = navs[i];			
			var navElement = document.getElementById("nav_" + currNavName);			
			var html_code_menu = ("nav_" + currNavName + "_menu");
			var html_code_title = ("nav_" + currNavName + "_title");			
			if (currNavName == navName) {
				eval("navElement.innerHTML =" + html_code_menu + ";");
				window.location.href = url;
			} else {
				eval("navElement.innerHTML =" + html_code_title + ";");
			}
		}
	}