var aktmenutable=0;
		var closetimer	=0;
		
		
		function showpulldownmenu(submenuobj, blockobj)
		{
		    // Z-Index setzen:
		    blockobj.parentNode.parentNode.style.zIndex = 300;
			cancelclosetimer();

			if (aktmenutable) 
			{
			    aktmenutable.style.visibility = 'hidden';
			}
			
			aktmenutable = submenuobj;
			
					
			submenuobj.style.visibility = 'visible';
			
			submenuobj.style.left = blockobj.offsetLeft;
			submenuobj.style.top = blockobj.offsetTop + blockobj.offsetHeight;

		}

		function closepulldownmenu(submenuobj)
		{
			closetimer = window.setTimeout(hidepulldownmenu, 500);
		}

		function hidepulldownmenu()
		{
			if (aktmenutable) 
			{
			    aktmenutable.style.visibility = 'hidden';
			    //aktmenutable = 0;			
			}
			
					
		}

		function cancelclosetimer()
		{
			if(closetimer)
				{
					window.clearTimeout(closetimer);
					closetimer = null;
				}
		}