var oCurrentMenu = "";
		var imgButtonGovernmentOn = new Image();
		var imgButtonGovernmentOff = new Image();
		var imgButtonCommercialOn = new Image();
		var imgButtonCommercialOff = new Image();
		var imgButtonServicesOn = new Image();
		var imgButtonServicesOff = new Image();
		objTimer = null;
		
		imgButtonGovernmentOn.src = "/images/btn_government_systems_on.gif";
		imgButtonGovernmentOff.src = "/images/btn_government_systems.gif";
		imgButtonCommercialOn.src = "/images/btn_commercial_systems_on.gif";
		imgButtonCommercialOff.src = "/images/btn_commercial_systems.gif";
		imgButtonServicesOn.src = "/images/btn_services_on.gif";
		imgButtonServicesOff.src = "/images/btn_services.gif";
		
		function fShow(strDiv) {
			
			var oDiv = document.getElementById(strDiv);
			oDiv.style.visibility = "visible";
			oDiv.style.display = "block";
		}
		
		function fHide(strDiv) {
			var oDiv = document.getElementById(strDiv);
			oDiv.style.visibility = "hidden";
			oDiv.style.display = "none";
		}
		
		function fShowMenu(strDiv) {
			//clearTimeout(objTimer);
			fShow("divMenu" + strDiv);
			//document.getElementById("btn"+strDiv).src = eval("imgButton"+strDiv + "On").src;
			document['btn'+strDiv].src  = eval("imgButton"+strDiv + "On").src;
			if(oCurrentMenu == strDiv) {
				return;
			}

			if(oCurrentMenu != "") {
				//document.getElementById("btn"+oCurrentMenu).src = eval("imgButton"+oCurrentMenu + "Off").src;
				document['btn'+oCurrentMenu].src = eval("imgButton"+oCurrentMenu + "Off").src;
				fHide("divMenu" + oCurrentMenu);
			}
			
			oCurrentMenu = strDiv;
		}
		
		function fHideMenu(strDiv) {
			fHide("divMenu" + strDiv);
			//document.getElementById("btn"+strDiv).src = eval("imgButton"+strDiv + "Off").src;
			document['btn'+strDiv].src  = eval("imgButton"+strDiv + "Off").src;
			oCurrentMenu = "";
		}