if (document.images) {
        img1Hover       = new Image();
        img1Hover.src   = "images/box_cue_hover.jpg" ;
        img1_blur     = new Image() ;
        img1_blur.src = "images/box_cue.jpg" ;
        
        img2Hover       = new Image();
        img2Hover.src   = "images/box_snooker_hover.jpg" ;
        img2_blur     = new Image() ;
        img2_blur.src = "images/box_snooker.jpg" ;
        
        img3Hover       = new Image();
        img3Hover.src   = "images/box_pool_hover.jpg" ;
        img3_blur     = new Image() ;
        img3_blur.src = "images/box_pool.jpg" ;
        
        img4Hover       = new Image();
        img4Hover.src   = "images/box_darts_hover.jpg" ;
        img4_blur     = new Image() ;
        img4_blur.src = "images/box_darts.jpg" ;
    }
    function hover( img1 )
    {
        if (document.images) {
          document[ img1 ].src = eval( img1 + "Hover.src" );
          document[ img2 ].src = eval( img2 + "Hover.src" );
          document[ img3 ].src = eval( img3 + "Hover.src" );
          document[ img4 ].src = eval( img4 + "Hover.src" );
        }
    }
    function _blur ( img1 )
    {
        if (document.images) {
          document[ img1 ].src = eval( img1 + "_blur.src" );
          document[ img2 ].src = eval( img2 + "_blur.src" );
          document[ img3 ].src = eval( img3 + "_blur.src" );
          document[ img4 ].src = eval( img4 + "_blur.src" );
        }
    }