function checkLinks()
            {
                
                if(which == 0) 
                { 
                    document.getElementById("idNavLeft").style.color = "#333"; 
                }
                else 
                { 
                    document.getElementById("idNavLeft").style.color = "#FFF"; 
                    //toggleLayer("idNavLeft");
                }
                                
                if(which == photos.length-1) 
                { 
                    document.getElementById("idNavRight").style.color = "#333"; 
                }
                else 
                { 
                    document.getElementById("idNavRight").style.color = "#FFF"; 
                    //toggleLayer("idNavRight");
                }                                               
                                             
            }

            function backward()
            {                               
                if (which>0)
                {                                    
                    which--
                    document.images.photoslider.src=photos[which]
                    document.getElementById("lbl").href = photoslink[which]
                }
                
                checkLinks();
                
                return false;
            }

            function forward()
            {                               
                if (which<photos.length-1)
                {                                    
                    which++
                    document.images.photoslider.src=photos[which]
                    document.getElementById("lbl").href = photoslink[which]
                    
                }              
                
                checkLinks();
                
                return false;
            }

            function transport()
            {
                document.write(photoslink[which])
            }

            function toggleLayer(whichLayer)
                {
                if (document.getElementById)
                {
                // this is the way the standards work
                var style2 = document.getElementById(whichLayer).style;
                style2.display = style2.display? "":"block";
                }
                else if (document.all)
                {
                // this is the way old msie versions work
                var style2 = document.all[whichLayer].style;
                style2.display = style2.display? "":"block";
                }
                else if (document.layers)
                {
                // this is the way nn4 works
                var style2 = document.layers[whichLayer].style;
                style2.display = style2.display? "":"block";
                }
                }