function f_ShowHide(sElementId) 
{
    var state='';           
    var o = document.getElementById(sElementId);    
    if (o == null)
        return;	
        
    if (o.open == null)
    {
		state = 'none'; 
		o.open = true;   
    }  
	else if (o.open)
	{ 
		state = 'block';
		o.open = false;
	} 
	else if (!o.open)
	{ 
		state = 'none'; 
		o.open = true;
	}	
	
	
	if (document.all){ //IS IE 4 or 5 (or 6 beta) 
		eval( "document.all." + sElementId + ".style.display = state"); 
	} 
	if (document.layers){ //IS NETSCAPE 4 or below 
		document.layers[sElementId].display = state; 
	} 
	if (document.getElementById &&!document.all){ 
		hza = document.getElementById(sElementId); 
		hza.style.display = state; 
	}  
}

function f_Show(sElementId) 
{         
    var o = document.getElementById(sElementId);    
    if (o == null)
        return;	
        
    o.open = false;
	if (document.all){ //IS IE 4 or 5 (or 6 beta) 
		eval( "document.all." + sElementId + ".style.display = 'block'"); 
	} 
	if (document.layers){ //IS NETSCAPE 4 or below 
		document.layers[sElementId].display = 'block'; 
	} 
	if (document.getElementById &&!document.all){ 
		hza = document.getElementById(sElementId); 
		hza.style.display = 'block'; 
	}  
}