var lasto = -1;
var lastObjectID;

function click(e) 
  {
                if (document.all) 
                  {
                    if (event.button==2||event.button==3) {
                      oncontextmenu='return false';

                    }
                  }

                if (document.layers) 
                  {
                    if (e.which == 3) {
                      oncontextmenu='return false';
                    }
                  }
                }

                if (document.layers) 
                {
                    document.captureEvents(Event.MOUSEDOWN);
                }
                document.onmousedown=click;          
                                
 function handleKeyDown() 
  {
   if (window.event.keyCode == 116) 
      {     
       event.keyCode=0;
       event.returnValue=false;   
      }
   }
document.onkeydown = handleKeyDown;             
//---------