showLayer = function(lid)
            {
                l = document.getElementById('layer'+lid);
                t = document.getElementById('pTab'+lid);
                for( i = 0; i < l.parentNode.childNodes.length; i++ )
                {
                    
                    if( l.parentNode.childNodes[i] != l && l.parentNode.childNodes[i].style)
                        l.parentNode.childNodes[i].style.display = 'none';
                }
                l.style.display = '';
                i = 1;
                for ( i =1; i < 5; i++ )
                    if( e = document.getElementById('pTab'+i) )
                        if( e != t ) e.className = 'pTab';
                t.className = 'pTab-a';
                    
            }
            
            activeBlock = 0;
            activeItem = 0;
			showBlock = function(obj, lnk)
			{
				
				if( activeBlock != 0 )
				{
					document.getElementById('block-'+activeBlock).style.display = 'none';
					activeItem.className = '';
				}
				if( activeBlock == obj )
				{
					activeItem = 0;
					activeBlock = 0;
					return;
				}
				if( document.getElementById('block-'+obj) )
				{
					try{
						document.getElementById('block-'+obj).style.display = 'table';
					}catch(e){
						document.getElementById('block-'+obj).style.display = 'block';
					}
					
					lnk.className='down';
				}
				activeItem = lnk;
				activeBlock = obj;
			}