/**
  * This method hides the menu on left frame  
 */
 
 var browser = navigator.appName;

function closeAll() 
{
	//alert("i am in closeall");
	if (browser == "Netscape")
	{
			//alert("i am in netscape");
			if (document.layers) 
			{
				//alert("i am in layers");
			document.layers.topLev.visibility = "hide";
			document.layers.argoLev.visibility = "hide";
			document.layers.argoLev1.visibility = "hide";
			document.layers.servicesLev.visibility = "hide";
			document.layers.missionLev.visibility = "hide";	
			document.layers.dataManageLev.visibility = "hide";
			document.layers.linksLev.visibility = "hide";
			}
			else
			{
				//alert("i am in 6");
				var s1 = document.getElementById("topLev");
				var s2 = document.getElementById("argoLev");
				var s3 = document.getElementById("argoLev1");
				var s4 = document.getElementById("servicesLev");
				var s5 = document.getElementById("dataManageLev");
				var s6 = document.getElementById("missionLev");
				var s7 = document.getElementById("linksLev");
				
				
				s1.style.visibility="hidden";
				s2.style.visibility="hidden";
				s3.style.visibility="hidden";
				s4.style.visibility="hidden";
				s5.style.visibility="hidden";
				s6.style.visibility="hidden";
				s7.style.visibility="hidden";
			}
	}
	
	else
	
	{
		//alert("i am in all");
		document.all.topLev.style.visibility = 'hidden';
		document.all.argoLev.style.visibility = 'hidden';
		document.all.argoLev1.style.visibility = 'hidden';
		document.all.servicesLev.style.visibility = 'hidden';
		document.all.missionLev.style.visibility = 'hidden';	
		document.all.dataManageLev.style.visibility = 'hidden';
		document.all.linksLev.style.visibility = 'hidden';
				
	}
	
//alert("i am after closeall");
}

/**
  * This method shows menu on left frame depending on the user selection 
  
*/

function showArea(idOpen) 
{

	//alert("i am in showarea");
	//alert(idOpen);
	closeAll();
	//alert("i am in showarea after close");
	if (browser == "Netscape")
	{
		//alert("i am in show netscape");
		if (document.layers) 
		
		{
		   //alert("i am in showarea layers");
		   eval('document.layers.' + idOpen).visibility = "show";
		}
		else
		{
			//alert("i am in showarea ns 6");
			var s=document.getElementById(idOpen)
			s.style.visibility = "visible";
		}
	}
	else
	{
	  	eval('document.all.' + idOpen).style.visibility = 'visible';
	  	
	}
	
//	alert("i in show after all");
}