function openlayer(layername, top)
{
	setTimeout('layer_on(\'' +layername+ '\', \'' +top+ '\')',300);
}
			
function closelayer(layername)
{  
	setTimeout('layer_off(\'' +layername+'\')',300);
}

function closelayer2(layername)
{  
	setTimeout('layer_off2(\'' +layername+'\')',300);
}

innerhalb_1 = '';
innerhalb_2 = '';
innerhalb_3 = '';
innerhalb_4 = '';
innerhalb_5 = '';
innerhalb_6 = '';
innerhalb_7 = '';

// *********** anzeige eines layers
function layer_on(layer, top) 
 {
 	document.getElementById('umenu').style.visibility = "visible";
		if((layer == 'umenu_1') && (!innerhalb_2) && (!innerhalb_3) && (!innerhalb_4) && (!innerhalb_5) && (!innerhalb_6) && (!innerhalb_7)) {	
			document.getElementById('umenu_1').style.visibility = "visible";		
			document.getElementById('umenu_1').style.top = top;
			
			document.getElementById('umenu_7').style.visibility = "hidden";
			document.getElementById('umenu_2').style.visibility = "hidden";
			document.getElementById('umenu_3').style.visibility = "hidden";
			document.getElementById('umenu_4').style.visibility = "hidden";
			document.getElementById('umenu_5').style.visibility = "hidden";
			document.getElementById('umenu_6').style.visibility = "hidden";			
		}
		if((layer == 'umenu_2') && (!innerhalb_1) && (!innerhalb_3) && (!innerhalb_4) && (!innerhalb_5) && (!innerhalb_6) && (!innerhalb_7)){		
			document.getElementById('umenu_2').style.visibility = "visible";
			document.getElementById('umenu_2').style.top = top;		
				
			document.getElementById('umenu_1').style.visibility = "hidden";
			document.getElementById('umenu_7').style.visibility = "hidden";
			document.getElementById('umenu_3').style.visibility = "hidden";
			document.getElementById('umenu_4').style.visibility = "hidden";
			document.getElementById('umenu_5').style.visibility = "hidden";
			document.getElementById('umenu_6').style.visibility = "hidden";
		}	
		if((layer == 'umenu_3') && (!innerhalb_1) && (!innerhalb_2) && (!innerhalb_4) && (!innerhalb_5) && (!innerhalb_6) && (!innerhalb_7)){		
			document.getElementById('umenu_3').style.visibility = "visible";
			document.getElementById('umenu_3').style.top = top;	
					
			document.getElementById('umenu_1').style.visibility = "hidden";
			document.getElementById('umenu_2').style.visibility = "hidden";
			document.getElementById('umenu_7').style.visibility = "hidden";
			document.getElementById('umenu_4').style.visibility = "hidden";
			document.getElementById('umenu_5').style.visibility = "hidden";
			document.getElementById('umenu_6').style.visibility = "hidden";
		}
		if((layer == 'umenu_4') && (!innerhalb_1) && (!innerhalb_2) && (!innerhalb_3) && (!innerhalb_5) && (!innerhalb_6) && (!innerhalb_7)){		
			document.getElementById('umenu_4').style.visibility = "visible";
			document.getElementById('umenu_4').style.top = top;	
					
			document.getElementById('umenu_1').style.visibility = "hidden";
			document.getElementById('umenu_2').style.visibility = "hidden";
			document.getElementById('umenu_3').style.visibility = "hidden";
			document.getElementById('umenu_7').style.visibility = "hidden";
			document.getElementById('umenu_5').style.visibility = "hidden";
			document.getElementById('umenu_6').style.visibility = "hidden";
		}
		if((layer == 'umenu_5') && (!innerhalb_1) && (!innerhalb_2) && (!innerhalb_4) && (!innerhalb_3) && (!innerhalb_6) && (!innerhalb_7)){		
			document.getElementById('umenu_5').style.visibility = "visible";
			document.getElementById('umenu_5').style.top = top;	
					
			document.getElementById('umenu_1').style.visibility = "hidden";
			document.getElementById('umenu_2').style.visibility = "hidden";
			document.getElementById('umenu_3').style.visibility = "hidden";
			document.getElementById('umenu_4').style.visibility = "hidden";
			document.getElementById('umenu_6').style.visibility = "hidden";
			document.getElementById('umenu_7').style.visibility = "hidden";
		}
		if((layer == 'umenu_6') && (!innerhalb_1) && (!innerhalb_2) && (!innerhalb_3) && (!innerhalb_4) && (!innerhalb_5) && (!innerhalb_7)){		
			document.getElementById('umenu_6').style.visibility = "visible";
			document.getElementById('umenu_6').style.top = top;	
					
			document.getElementById('umenu_1').style.visibility = "hidden";
			document.getElementById('umenu_2').style.visibility = "hidden";
			document.getElementById('umenu_3').style.visibility = "hidden";
			document.getElementById('umenu_4').style.visibility = "hidden";
			document.getElementById('umenu_5').style.visibility = "hidden";
			document.getElementById('umenu_7').style.visibility = "hidden";
		}
		if((layer == 'umenu_7') && (!innerhalb_1) && (!innerhalb_2) && (!innerhalb_3) && (!innerhalb_4) && (!innerhalb_5) && (!innerhalb_6)){		
			document.getElementById('umenu_7').style.visibility = "visible";
			document.getElementById('umenu_7').style.top = top;	
					
			document.getElementById('umenu_1').style.visibility = "hidden";
			document.getElementById('umenu_2').style.visibility = "hidden";
			document.getElementById('umenu_3').style.visibility = "hidden";
			document.getElementById('umenu_4').style.visibility = "hidden";
			document.getElementById('umenu_5').style.visibility = "hidden";
			document.getElementById('umenu_6').style.visibility = "hidden";												
		}										
 }
	
// *********** ausblenden eines layers
function layer_off(layer)
 {
	if(!innerhalb_1)
	{
		document.getElementById('umenu_1').style.visibility = "hidden";
	}
	if(!innerhalb_2)
	{
		document.getElementById('umenu_2').style.visibility = "hidden";
	}	
	if(!innerhalb_3)
	{
		document.getElementById('umenu_3').style.visibility = "hidden";
	}	
	if(!innerhalb_4)
	{
		document.getElementById('umenu_4').style.visibility = "hidden";
	}
	if(!innerhalb_5)
	{
		document.getElementById('umenu_5').style.visibility = "hidden";
	}
	if(!innerhalb_6)
	{
		document.getElementById('umenu_6').style.visibility = "hidden";
	}			
	if(!innerhalb_7)
	{
		document.getElementById('umenu_7').style.visibility = "hidden";
	}
		
	if((!innerhalb_1) && (!innerhalb_2) && (!innerhalb_3) && (!innerhalb_4) && (!innerhalb_5) && (!innerhalb_6) && (!innerhalb_7))
	{
		document.getElementById('umenu').style.visibility = "hidden";
	}
 }
// *********** ausblenden eines layers
function layer_off2(layer)
 {
	if(!innerhalb_1)
	{
		document.getElementById('umenu_1').style.visibility = "hidden";
	}
	if(!innerhalb_2)
	{
		document.getElementById('umenu_2').style.visibility = "hidden";
	}	
	if(!innerhalb_3)
	{
		document.getElementById('umenu_3').style.visibility = "hidden";
	}	
	if(!innerhalb_4)
	{
		document.getElementById('umenu_4').style.visibility = "hidden";
	}	
	if(!innerhalb_5)
	{
		document.getElementById('umenu_5').style.visibility = "hidden";
	}	
	if(!innerhalb_6)
	{
		document.getElementById('umenu_6').style.visibility = "hidden";
	}
	if(!innerhalb_7)
	{
		document.getElementById('umenu_7').style.visibility = "hidden";
	}					
 }