// JavaScript Document
function show_layer(lname, flag)
	{  	
		var layer = (navigator.appName == 'Netscape') ? document.layers[lname] : document.all[lname];
		if (lname == '')
			return;
		if (navigator.appName == 'Netscape')
			layer.visibility = (flag == 0) ? 'show' : 'hide';
		else
			layer.style.visibility = (flag == 0) ? 'visible' : 'hidden';
			
		switch(lname)
	  	{
			case "sub01":			
				document.all['sub02'].style.visibility = 'hidden';
				document.all['sub03'].style.visibility = 'hidden';
				document.all['sub04'].style.visibility = 'hidden';
				document.all['sub05'].style.visibility = 'hidden';
				document.all['sub07'].style.visibility = 'hidden';
				break
			case "sub02":		
				document.all['sub01'].style.visibility = 'hidden';				
				document.all['sub03'].style.visibility = 'hidden';
				document.all['sub04'].style.visibility = 'hidden';
				document.all['sub05'].style.visibility = 'hidden';
				document.all['sub07'].style.visibility = 'hidden';
				break
			case "sub03":		
				document.all['sub01'].style.visibility = 'hidden';
				document.all['sub02'].style.visibility = 'hidden';				
				document.all['sub04'].style.visibility = 'hidden';
				document.all['sub05'].style.visibility = 'hidden';
				document.all['sub07'].style.visibility = 'hidden';
				break
			case "sub04":		
				document.all['sub01'].style.visibility = 'hidden';
				document.all['sub02'].style.visibility = 'hidden';
				document.all['sub03'].style.visibility = 'hidden';				
				document.all['sub05'].style.visibility = 'hidden';
				document.all['sub07'].style.visibility = 'hidden';
				break
			case "sub05":		
				document.all['sub01'].style.visibility = 'hidden';
				document.all['sub02'].style.visibility = 'hidden';
				document.all['sub03'].style.visibility = 'hidden';
				document.all['sub04'].style.visibility = 'hidden';
				document.all['sub07'].style.visibility = 'hidden';				
				break
			case "sub07":		
				document.all['sub01'].style.visibility = 'hidden';
				document.all['sub02'].style.visibility = 'hidden';
				document.all['sub03'].style.visibility = 'hidden';
				document.all['sub04'].style.visibility = 'hidden';
				document.all['sub05'].style.visibility = 'hidden';
				break		
	  	}  
	}